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startcombination alignment problem
by Xan 11 Jun '09

11 Jun '09

Hi, I want to put three graphics by this way: [graphic 1] [graphic 2] [graphic 3] where graphic 3 is centered. I use combination, but graphic 3 puts me in left [graphic 1] [graphic 2] [graphic 3] How can I solve that? Thanks in advance, Xan. PS: Please, CCme. I put the code: \placefigure [here] [figura-area] {Camins sobre $w$} {\startcombination[2*1] { \starttikzpicture[scale=1] % Els punts \filldraw (0,-4) circle (2pt); \filldraw (0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = 0.141 \filldraw (-0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = -0.141 % Les línies entre els punts \draw (-0.4216,3.9603) -- (0.4216,3.9603); \draw plot[domain=-3.141:-0.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \draw plot[domain=0.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \filldraw (0,-4) circle (2pt); % perquè me quedi el punt damunt. % Els combings % Dibuixo: % amb y la línia recta que uneix els dos punts, directament % per x faig un funció del sinus (sin nx + ax = k) \draw plot[domain=0:0.4216,smooth,variable=\t] ({-0.857727*\t -sin (7.31228*\t r) },{18.8812*\t -4 }); \draw plot[domain=0:0.4216,smooth,variable=\t] ({+0.857727*\t +sin (7.31228*\t r) },{18.8812*\t -4 }); % el sentit d'omega \draw[decorate,decoration={markings,mark=at position .9 with {\arrow[blue,line width=1mm]{<}}}] plot[domain=-3.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); % Els punts de les cel·les % Calcul els combings per a y= 0 i y=1 \filldraw (-1.181475, 0) circle (2pt); \filldraw (1.181475, 0) circle (2pt); %\filldraw (1.161048, 1) circle (2pt); %\filldraw (-1.161048, 1) circle (2pt); % Els noms \draw (0, -4.3) node {$1 \in G$}; \draw (2.5, -3) node {$w$}; \draw (-1.8, -0.3) node {$\sigma_{i+1}(j)$}; \draw (1.65, -0.3) node {$\sigma_i(j)$}; % Els noms dels camins %\draw (1, 0.3) node {$a$}; %\draw (3, 0.3) node {$b$}; %\draw (3.7, 1) node {$c$}; %\draw (3, 1.7) node {$d$}; %\draw (1, 1.7) node {$e$}; %\draw (0.3, 1) node {$f$}; %\draw (2.3, 1) node {$g$}; % PROVES %\draw[out=45,in=-45] (0,0) to (0.5,8); %\draw[color=blue,->] (0,0) .. controls (0.1,2) .. (0.2,3) .. controls (0.3,4) and (0.4,6) .. (0.5,8); %\draw (0,0) arc (-90:90:3 and 4); %\draw (0,0) arc (270:90:3 and 4); %\draw[color=green] plot[domain=-3.141:3.141,smooth,variable=\t] ({4*sin(\t + (.1 * rand) r)},{4*cos(\t r)}); %\draw (0,0) arc (-90:81.82:2 and 4); %\draw[decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (0,0) arc (-90:97.18:3.5 and 4); % \draw[very thin,color=gray] (-5.1,-5.1) grid [step=1] (5.9,5.9); % \draw[->] (-5.2,0) -- (6.2,0) node[right] {$x$}; % \draw[->] (0,-5.2) -- (0,5.2) node[above] {$y$}; % r = \frac{-1}{3} x + 3 %\filldraw (3,2) circle (2pt); %\filldraw (-3,4) circle (2pt); %\draw (-6,5) -- (6,1); %\draw (1, 3.5) node {$r$}; \stoptikzpicture} {Les seccions de $\pi(w(i))$.} { \starttikzpicture[scale=1] % Els punts \filldraw (0,-4) circle (2pt); \filldraw (0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = 0.141 \filldraw (-0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = -0.141 % Les línies entre els punts \draw (-0.4216,3.9603) -- (0.4216,3.9603); \draw plot[domain=-3.141:-0.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \draw plot[domain=0.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \filldraw (0,-4) circle (2pt); % perquè me quedi el punt damunt. % Els combings % Dibuixo: % amb y la línia recta que uneix els dos punts, directament % per x faig un funció del sinus (sin nx + ax = k) \draw plot[domain=0:0.4216,smooth,variable=\t] ({-0.857727*\t -sin (7.31228*\t r) },{18.8812*\t -4 }); \draw plot[domain=0:0.4216,smooth,variable=\t] ({+0.857727*\t +sin (7.31228*\t r) },{18.8812*\t -4 }); % el sentit d'omega \draw[decorate,decoration={markings,mark=at position .9 with {\arrow[blue,line width=1mm]{<}}}] plot[domain=-3.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); % Els punts de les cel·les % Calcul els combings per a y= 0 i y=1 \filldraw (-1.181475, 0) circle (2pt); \filldraw (1.181475, 0) circle (2pt); %\filldraw (1.161048, 1) circle (2pt); %\filldraw (-1.161048, 1) circle (2pt); % Els noms \draw (0, -4.3) node {$1 \in G$}; \draw (2.5, -3) node {$w$}; \draw (-1.8, -0.3) node {$\sigma_{i+1}(j)$}; \draw (1.65, -0.3) node {$\sigma_i(j)$}; % Els noms dels camins %\draw (1, 0.3) node {$a$}; %\draw (3, 0.3) node {$b$}; %\draw (3.7, 1) node {$c$}; %\draw (3, 1.7) node {$d$}; %\draw (1, 1.7) node {$e$}; %\draw (0.3, 1) node {$f$}; %\draw (2.3, 1) node {$g$}; \stoptikzpicture} {El camí $\theta_{i,j}$.} \stopcombination \startcombination[1*1] { \starttikzpicture[scale=1] % Els punts \filldraw (0,-4) circle (2pt); \filldraw (0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = 0.141 \filldraw (-0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = -0.141 % Les línies entre els punts \draw (-0.4216,3.9603) -- (0.4216,3.9603); \draw plot[domain=-3.141:-0.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \draw plot[domain=0.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \filldraw (0,-4) circle (2pt); % perquè me quedi el punt damunt. % Els combings % Dibuixo: % amb y la línia recta que uneix els dos punts, directament % per x faig un funció del sinus (sin nx + ax = k) \draw plot[domain=0:0.4216,smooth,variable=\t] ({-0.857727*\t -sin (7.31228*\t r) },{18.8812*\t -4 }); \draw plot[domain=0:0.4216,smooth,variable=\t] ({+0.857727*\t +sin (7.31228*\t r) },{18.8812*\t -4 }); % el sentit d'omega \draw[decorate,decoration={markings,mark=at position .9 with {\arrow[blue,line width=1mm]{<}}}] plot[domain=-3.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); % el sentit de \tau_i \draw[decorate,decoration={markings,mark=at position .4 with {\arrow[green,line width=1mm]{<}}}] plot[domain=0:0.4216,smooth,variable=\t] ({-0.857727*\t -sin (7.31228*\t r) },{18.8812*\t -4 }); \draw[decorate,decoration={markings,mark=at position .6 with {\arrow[green,line width=1mm]{>}}}] plot[domain=0:0.4216,smooth,variable=\t] ({+0.857727*\t +sin (7.31228*\t r) },{18.8812*\t -4 }); % Els punts de les cel·les % Calcul els combings per a y= 0 i y=1 %\filldraw (-1.181475, 0) circle (2pt); %\filldraw (1.181475, 0) circle (2pt); %\filldraw (1.161048, 1) circle (2pt); %\filldraw (-1.161048, 1) circle (2pt); %\filldraw [top color=yellow] plot[domain=0:0.4216,smooth,variable=\t] ({+0.857727*\t +sin (7.31228*\t r) },{18.8812*\t -4 }); % Els noms \draw (0, -4.3) node {$1 \in G$}; \draw (2.5, -3) node {$w$}; \draw (1.5,0) node {$\tau_i$}; \draw (-0.8,4.5) node {$\sigma_{i+1}(\frac{\lvert w \rvert}{2})$}; \draw (0.8,4.5) node {$\sigma_i(\frac{\lvert w \rvert}{2})$}; %\draw (-1.8, -0.3) node {$\sigma_{i+1}(j)$}; %\draw (1.65, -0.3) node {$\sigma_i(j)$}; % Els noms dels camins %\draw (1, 0.3) node {$a$}; %\draw (3, 0.3) node {$b$}; %\draw (3.7, 1) node {$c$}; %\draw (3, 1.7) node {$d$}; %\draw (1, 1.7) node {$e$}; %\draw (0.3, 1) node {$f$}; %\draw (2.3, 1) node {$g$}; \stoptikzpicture} {El camí $\tau_i$} \stopcombination }

2 3

diaresis in url with \goto
by Peter Münster 11 Jun '09

11 Jun '09

Hello, How can I get a diaresis in a url with \goto? This is, what I've tried: \setupinteraction[state=start] \def\gotoURL#1{\tt\goto{#1}[url(#1)]} \starttext \gotoURL{http://test.com/test#test} \gotoURL{http://test.com/test\#test} \gotoURL{http://test.com/test\string#test} \gotoURL{http://test.com/test\textdiaresis test} \stoptext Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

2 2

URL colors are gone
by Vyatcheslav Yatskovsky 10 Jun '09

10 Jun '09

Hello, I use \useURL[abc] [http://abc.com] [] [http://abc.com] but in mkiv it is typeset without color. \setupinteraction[state=start,color=blue] does not help. Regards, Vyatcheslav

5 6

3SIDE imposition schema weirdness
by Nicolas Girard 10 Jun '09

10 Jun '09

Hi, i'm a little bit puzzled by the results of the following test file, using the 3SIDE imposition schema from Willi ( http://wiki.contextgarden.net/Imposition#Additional_schemas ). The results consists in pages 1|2|3 on the recto of the sheet, and pages 4|5|6 on the verso. * Is it really the intended result ? * If so, I don't understand how can \dosetuparrangement{3}{1}{6}{4}{2} give 1|2|3 // 4|5|6 . What's the rationale ? Why no page 5 among the arguments of \dosetuparrangement ? * What if one wants to fold the resulting brochure ? How to adapt the code (besides by try and error) for the resulting arrangement to be 3|6|1 // 2|4|5 ? Thanks in advance, cheers, Nicolas

3 5

Problems with bibtex and @incollection
by Xan 10 Jun '09

10 Jun '09

Hi, When I put one reference as @incollection Bibtex does not show me the title of the article in the book, but yes the booktitle. Why?. Anyone could help me please. I attached the files.... Xan. Please CC me % interface=en output=pdftex %\environment capcalera.context % Capçalera % Regime \enableregime[utf] % Choose a font \setupbodyfont [cmr,11pt] % Be tolerant with paragraph building \setuptolerance [horizontal,verytolerant,stretch] % Choose a language, and associated hyphenation rules. %\language [ca] \mainlanguage[ca] % Page number \setuppagenumbering [location={footer}] % White space between paragraphs %\setupwhitespace [big] % Paper size \setuppapersize [a4] % Margins %\setuplayout [grid=yes, footer=0.5\footerheight, header=0.5\headerheight] %\setuplayout[footer=2cm, header=2cm] %\showlayout %\showframe %\showsetups % Format de marges \setuplayout[topspace=1.5cm, % marge d'adalt margin=1.5cm, %marges dels costats header=1.0cm,%separació entre adalt i primera línia footer=1.0cm,%separació entre abaix i darrera línia width=fit,height=fit,backspace=2cm] % Enable colors and activate hyperlinks \setupcolors [state=start] \definecolor[lightblue][r=0.5, g=0.5, b=1.0] %\setupinteraction [state=start, color=lightBlue] %\setupurl[style=small, space=yes] \setupurl[space=yes] % Enumerate the URLs %\useURL[wiki][http://wiki.contextgarden.net][][\ConTeXt\ wiki] %\useURL[nagorko-pdf][http://www.math.bgu.ac.il/~barakw/probseminar/nagorko/slides.pdf][][http://www.math.bgu.ac.il/\~{}barakw/\quad\quad\quad\quad probseminar/nagorko/slides.pdf] %\useURL[govern-me][http://sgtrelinst.caib.es/llibrestil/00index.html][][http://sgtrelinst.caib.es/llibrestil/00index.html] %\useURL[context-manual-pdf][http://www.pragma-ade.com/general/manuals/cont-eni.pdf][][http://www.pragma-ade.com/general/manuals/ cont-eni.pdf] %\useURL [contextgarden] [{http://www.contextgarden.net}] %\useURL [mccammond][{http://www.math.ucsb.edu/~jon.mccammond/geogrouptheory/}][] [{\tf http://www.math.ucsb.edu/\~{}jon.mccammond/geogrouptheory/}] % Fonts %% Chapters... \setupheads[align=flushleft] \setuphead[chapter][style={\tfd\bf}] \setuphead[section][style={\bfc}, header=nomarking] \setuphead[subsection][style={\bfb}] \setuphead[subsubsection][style={\bfa}] %\setuphead[section][textstyle=bold] % Bibliography options % BIBTEX \usemodule[bib] \usemodule[bibltx] \setupbibtex[database=tfm,sort=author] \setuppublications [alternative=ams,numbering=yes, sorttype=bbl, criterium=cite]% \setupheadtext[ca][pubs=Referències] \setuppublicationlist[authoretallimit=3] \setuppublicationlist[authoretaltext={\it\ et al.}] \setuppublicationlist[authoretaldisplay=1] %Indentation \setupheads[indentnext=yes] \setupindenting[yes,small,first] %\setupformulae[indentnext=yes] % Vertical spaces between paragraphs \setupwhitespace[small] %Itemize \setupitemize[each][identnext=yes,margin=2em] \setupitemize[each][headstyle=bold] %\setupitemize[a][right=),stopper=] % Mathematical packets \usemodule[newmat] \usemodule[math-ams] % Heads and footers \setupfootertexts[\pagenumber/\lastpage] \setupfooter[text][before=\hrule] \setupheader[text][after=\hrule] \setupheadertexts[{\tfx Màster de Matemàtiques}][{\tfx \jobname.\ConTeXt{}.\currentdate}] % hyphenating \hyphenation{do-cu-ment} \hyphenation{pro-ble-ma} \hyphenation{es-crip-tu-ra} \hyphenation{ge-ne-ra-lit-za-ció} \hyphenation{cor-res-po-nents} % Modules \usemodule[tikz] \usemodule[pgfmath] \usetikzlibrary[mindmap,arrows,calc,decorations.pathmorphing,decorations.markings] %\usetikzlibrary[trees] % AMSTHM equivalent %% Exercici \defineenumeration [exercici] [text={Problema},headstyle=bold,between=\blank,titledistance=0em,textdistance=1em, stopper={.\space},location=serried,left={\bgroup\bf},right={\egroup},width=fit,before={\bgroup\startframedtext[background=screen,frame=off,width=broad]},after={\stopframedtext\egroup}] %% Lema \defineenumeration [lema] [text={Lema}, % Què es mostra before={\blank[big]}, % abans de lema, un bigskip after={\blank[big]}, % després de lema, un bigskip headstyle=bold, % Negreta per la capçaleras %between=\blank, % Entre Lemmes una línia en blanc titledistance=.5em, % espai entre número i parèntesis. textdistance=.5em, % espai entre ) i text stopper={.\space}, % Com acaba. Després de parèntesis un '.' location=serried, width=fit, % que ocupi tot l'espai style=italic, % estil del text title=yes, % si puc posar o no arguments opcionals titlestyle=bf, % estil del títol way=bytext, % enumerar en tot el document conversion=numbers,indenting=yes] % enumera amb arabic %% Proposició, corol·laris, teoremes. %% Comparteix els nombres amb lema %% Si volem que vagin a part, hem de posar 'number=proposition' \defineenumeration [proposition] [lema] [text={Proposició}] \defineenumeration [corollary] [lema] [text={Corol·lari}] \defineenumeration [theorem] [lema] [text={Teorema}] %% Definició \defineenumeration [definition] [lema] [text={Definició},style=tf,titlestyle=bf,indenting=yes] \defineenumeration [notation] [definition] [text={Notació},style=tf,titlestyle=bf,indenting=yes] \defineenumeration [note] [definition] [text={Nota},style=tf,titlestyle=bf,indenting=yes] %% Demostració \defineenumeration[demo][text={Demostració.\space},number=no,location=serried,width=fit,headstyle=italic,indentnext=yes,between=\blank,textdistance=.5em,closesymbol={\mathematics{\Box}},style=normal,indenting=yes] % Table of contents %% dots between... and subsubsubsection are not listed \setupcombinedlist[content][level=4,alternative=c] %% section = bold. % width= 10mm --> less space between num-letter %% line break after section. \setuplist[section][style=bold,width=10mm] \setuplist[section][before=\blank] %% margin = 10 mm. Put the subsection just bottom section. \setuplist[subsection][margin=10mm,width=10mm] \setuplist[subsubsection][margin=20mm,width=10mm] %\setuplist[subsection] %[distance=1em] % section = bold. % % Això ho trec d'un manual: %\setuplist[subsection] % [margin=1em, % numbercommand=\NumCom] %\def\NumCom#1{\hbox to 2em{\hfill #1}} % Set "Índex" like "Índex de continguts" \setupheadtext [ca] [content=Índex] % Definitions/abbreviations \define[1]\dist{d(\sigma_g(#1), \sigma_h(#1))} \define[1]\imp{{\bgroup\startframedtext[background=screen,frame=on,width=broad]#1\stopframedtext\egroup}} %\define[1]\imp{{\bgroup\startframedtext[background=color,backgroundcolor=lightblue,frame=on,width=broad]#1\stopframedtext\egroup}} % SPLIT \def\startsplit {\startalign} % no number by default \def\stopsplit {&\doalignNR[+][]\crcr % for a number on last line \stopalign} % Other \setupunderbar[alternative=b] % Fix underline style % For putting underline with spaces: \underbar{\dorecurse{40}~} % Start the text \starttext \section{Preliminars} \startdefinition Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$ i ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$. Una paraula $w \in A^*$ es {\em nul-homotòpica} per ${\cal P}$ si, i només si, $\pi(w) = 1 \in G$, o, equivalentment, si $w$ forma un cicle dins el graf de Cayley $\Gamma_{G, A}$. \stopdefinition la defininció d'àrea posar que assumeixo que el conjunt de relacions conté també els simètrics. Totes les presentacions finites de $G$ tenen a $A$ com a conjunt finit de generadors de $G$. \section{Millores directes de les fites de la funció de Dehn per grups seccionables} \startlema[area-concatenacio] Siguin $G$ un grup, ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$ i $u, v, w$ paraules nul-homotòpiques per ${\cal P}$. Si $w = u v$ dins el grup lliure $F(A)$, aleshores \startformula \text{area} (w) \leq \text{area}(u) + \text{area}(v). \stopformula \stoplema \startdemo Si $\text{area}(u) = N$ i $\text{area}(v) = M$, aleshores \startformula \startmathalignment \NC u \NC = \prod_{i=1}^N x_i^{-1} r_i x_i, \NR[+] \NC v \NC = \prod_{j=1}^M y_j^{-1} s_j y_j, \NR[+] \stopmathalignment \stopformula% per a alguns $x_i, y_j \in F(A)$, $r_i, s_j \in R$, on aquestes igualtats són dins el grup lliure $F(A)$. Com que $w = u v$ també dins el grup lliure, tenim que \placeformula[-] \startformula \startsplit \NC w = u v \NC = \bigl( \prod_{i = 1}^N x_i^{-1} r_i x_i \bigr) \cdot \bigl( \prod_{j=1}^M y_j^{-1} s_j y_j \bigr) \NR \NC \NC = (x_1^{-1} r_1 x_1)\cdots (x_N^{-1} r_N x_N) \cdot (y_1^{-1} s_1 y_1) \cdots (y_M^{-1} s_M y_M) \NR \NC \NC = \prod_{k=1}^{M+N} z_k^{-1} t_k z_k \stopsplit \stopformula on \startformula z_k = \startcases \NC x_k \MC 1 \leq k \leq N \NR \NC y_{k-N} \MC N+1 \leq k \leq N+M, \NR \stopcases t_k = \startcases \NC r_k \MC 1 \leq k \leq N \NR \NC s_{k-N} \MC N+1 \leq k \leq N+M. \NR \stopcases \stopformula Llavors, per definició, $\text{area}(w) \leq N+M = \text{area}(u) + \text{area}(v)$. \stopdemo \startlema[area-conjugats] Siguin $G$ un grup i ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$. Si $w$ és una paraula nul-homotòpica per ${\cal P}$ i $x \in F(A)$, llavors \startformula \text{area}(x^{-1}wx) \leq \text{area}(w). \stopformula \stoplema \startdemo Suposem que $\text{area}(w) = N$. Aleshores existeixen $x_i \in F(A)$ i $r_i \in R$, amb $i \in \{1, \ldots, N\}$, tals que \placeformula[-] \startformula w = \prod_{i=1}^N x_i^{-1} r_i x_i, \stopformula on aquesta igualtat és dins el grup lliure $F(A)$. Aleshores, dins el grup lliure, tenim que \placeformula[-] \startformula \startsplit \NC x^{-1} w x \NC = x^{-1} \bigl( \prod_{i = 1}^N x_i^{-1} r_i x_i \bigr) x \NR \NC \NC = x^{-1} (x_1^{-1} r_1 x_1)\cdots (x_N^{-1} r_N x_N) x \NR \NC \NC = (x^{-1} x_1^{-1} r_1 x_1 x) (x^{-1} x_2^{-1} r_2 x_2 x)\cdots (x^{-1} x_N^{-1} r_N x_N x) \NR \NC \NC = \prod_{i=1}^N x^{-1} x_i^{-1} r_i x_i x \NR \NC \NC = \prod_{i=1}^N (x_i x )^{-1} r_i (x_i x), \stopsplit \stopformula per la qual cosa tenim que $\text{area}(x^{-1}wx) \leq N = \text{area}(w)$, que és el que volíem veure. \stopdemo \startlema[lema-tecnic] Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$ i ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$, $g_1, g_2, g_3, g_4, g_5, g_6 \in G$ i els camins $a$, $b$, $c$, $d$, $e$, $f$ i $g$ dins el graf de Cayley $\Gamma_{G, A}$ que uneixen els parells de punts $(g_1, g_2)$, $(g_2, g_3)$, $(g_3, g_4)$, $(g_4, g_5)$, $(g_5, g_6)$, $(g_6, g_1)$ i $(g_2, g_5)$, respectivament (tal com es representa a la figura). \placefigure [none,here] [fig:figura-de-6] {Esquema dels 6 punts} {\startcombination[1*1] { \starttikzpicture[scale=1] % Els punts \filldraw (0,0) circle (2pt); \filldraw (2,0) circle (2pt); \filldraw (4,0) circle (2pt); \filldraw (4,2) circle (2pt); \filldraw (2,2) circle (2pt); \filldraw (0,2) circle (2pt); % Les línies aleatòries entre punts \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (0,0) -- (2,0); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (2,0) -- (4,0); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (4,0) -- (4,2); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (4,2) -- (2,2); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (2,2) -- (0,2); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (0,2) -- (0,0); \draw [decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (2,0) -- (2,2); % el sentit \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (0,0) -- (2,0); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (2,0) -- (4,0); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (4,0) -- (4,2); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (4,2) -- (2,2); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (2,2) -- (0,2); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (0,2) -- (0,0); \draw [decorate,decoration={markings,mark=at position .5 with {\arrow[blue,line width=1mm]{>}}}] (2,0) -- (2,2); % Els noms \draw (0, -0.3) node {$g_1$}; \draw (2, -0.3) node {$g_2$}; \draw (4, -0.3) node {$g_3$}; \draw (4, 2.3) node {$g_4$}; \draw (2, 2.3) node {$g_5$}; \draw (0, 2.3) node {$g_6$}; % Els noms dels camins \draw (1, 0.3) node {$a$}; \draw (3, 0.3) node {$b$}; \draw (3.7, 1) node {$c$}; \draw (3, 1.7) node {$d$}; \draw (1, 1.7) node {$e$}; \draw (0.3, 1) node {$f$}; \draw (2.3, 1) node {$g$}; % \draw[very thin,color=gray] (-5.1,-5.1) grid [step=1] (5.9,5.9); % \draw[->] (-5.2,0) -- (6.2,0) node[right] {$x$}; % \draw[->] (0,-5.2) -- (0,5.2) node[above] {$y$}; % r = \frac{-1}{3} x + 3 %\filldraw (3,2) circle (2pt); %\filldraw (-3,4) circle (2pt); %\draw (-6,5) -- (6,1); %\draw (1, 3.5) node {$r$}; \stoptikzpicture} { } \stopcombination} D'altra banda, siguin $w_1, w_2$ i $w \in A^*$ les paraules formades per la composició de les paraules corresponents a aquests camins (que seguirem indicant de la mateixa manera) definides com: \startformula \startmathalignment \NC w_1 \NC = f^{-1}e^{-1}g^{-1}a^{-1}, \NR[+] \NC w_2 \NC = d^{-1} c^{-1} b^{-1} g,\NR[+] \NC w \NC = f^{-1} e^{-1} d^{-1} c^{-1} b^{-1} a^{-1}.\NR[+] \stopmathalignment \stopformula Aleshores $w, w_1, w_2$ són nul-homotòpiques per ${\cal P}$ i a més, \startformula \text{area}(w) \leq \text{area}(w_1) + \text{area}(w_2). \stopformula \stoplema \startdemo De forma òbvia tenim que $w_1$, $w_2$ i $w$ són nul-homotòpiques per ${\cal P}$, ja el seus camins dins el graf de Cayley formen cicles (per exemple el camí corresponent a $w_1$ forma un cicle amb punt inicial i punt final $g_1$, perquè és composició de camins de $g_1$ a $g_6$, de $g_6$ a $g_5$, de $g_5$ a $g_2$ i, finalment, de $g_2$ a $g_1$). D'altra banda, dins el grup lliure $F(A)$ tenim que \startformula w = (f^{-1}e^{-1}g^{-1}a^{-1}) a g (d^{-1}c^{-1}b^{-1}g)g^{-1}a^{-1} = w_1 ag w_2 (ag)^{-1}. \stopformula Per tant, dins $F(A)$, $w = w_1 x^{-1} w_2 x$ amb $x \in F(A)$. Llavors, aplicant el lemes \in[area-concatenacio] i \in[area-conjugats], tenim que \startformula \text{area}(w) = \text{area}(w_1 x^{-1}w_2 x) \leq \text{area}(w_1) + \text{area}(x^{-1} w_2 x) \leq \text{area}(w_1) + \text{area}(w_2). \stopformula \stopdemo \startdefinition{Paraules congruents} Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$ i ${\cal P} = \langle A \mid R\rangle$ una presentació finita de $G$. Dues paraules $w_1, w_2 \in A^*$ nul-homotòpiques per ${\cal P}$ són {\em congruents} si, i només si, dins el graf de Cayley $\Gamma_{G, A}$ existeixen punts $g_1, g_2, g_3, g_4, g_5, g_6 \in G$ i camins $a, b, c, d, e, f, g$ que uneixen els parells de punts $(g_1, g_2)$, $(g_2, g_3)$, $(g_3, g_4)$, $(g_4, g_5)$, $(g_5, g_6)$, $(g_6, g_1)$ i $(g_2, g_5)$, respectivament, tals que les paraules corresponents a aquests camins (que seguirem indicant de la mateixa manera) satisfan \startformula \startmathalignment \NC w_1 \NC = f^{-1}e^{-1}g^{-1}a^{-1}, \NR[+] \NC w_2 \NC = d^{-1} c^{-1} b^{-1} g.\NR[+] \stopmathalignment \stopformula En aquest cas, indicarem amb $w_1 \sharp w_2$ a la paraula definida com \startformula w_1 \sharp w_2 = f^{-1} e^{-1} d^{-1} c^{-1} b^{-1} a^{-1}. \stopformula \stopdefinition Del lema previ i d'aquesta definició tenim que si $u$, $v$ són paraules congruents, aleshores $u \sharp v$ és nul-homotòpica per ${\cal P}$ i $\text{area}(u\sharp v) \leq \text{area}(u) + \text{area}(v)$, o sigui, tenim que la funció $\text{area} \colon \{w \in A^* \mid \text{nul-homotòpica per } {\cal P} \} \to \naturalnumbers$ és subadditiva per a paraules congruents, o sigui, subadditiva per l'operació $\sharp$. \startlema[lema0]Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$ i ${\cal P} = \langle A \mid R\rangle$ una presentació finita de $G$. Si $w$ és una paraula nul-homotòpica per ${\cal P}$, aleshores $d(1, w(t)) \leq {\lvert w\rvert}/2$, per a tot $t \in \naturalnumbers$. \stoplema \startdemo La distància $d(1, w(t))$ és menor o igual que la longitud del menor camí des d'$1$ a $w(t)$ que passa per sobre la corba. Si $t \leq {\lvert w\rvert }/2$, aleshores aquesta longitud és menor o igual que ${\lvert w\rvert}/2$, ja que podem seguir el camí sobre la corba que va de $w(t)$ a $w(0)$. Si $t > {\lvert w\rvert }/2$, llavors aquesta longitud també és menor igual que ${\lvert w\rvert }/2$, ja que podem seguir el camí sobre la corba de $w(t)$ a $w({\lvert w\rvert})$. En tot cas, $d(1, w(t)) \leq {\lvert w\rvert}/2$. \stopdemo \startlema[subadditivitat-area] Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$, ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$, $\sigma \colon G \rightarrow A^*$ una secció d'amplada $\varphi$. Aleshores, per a tota paraula $w \in A^*$ nul-homotòpica per ${\cal P}$, existeixen $u_k$ paraules nul-homotòpiques per ${\cal P}$, amb $k \in \{1, \ldots, {\lvert w \rvert}^2/2\}$, de longitud $l(u_k) \leq 2\varphi({\lvert w \rvert}/2)+2$ tals que \startformula \text{area}(w) \leq \sum_{k=1}^{{{\lvert w \rvert}^2}/2} \text{area}(u_k). \stopformula \stoplema \startdemo Sigui $w$ una paraula nul-homotòpica per ${\cal P}$. Si $w = \varepsilon$, aleshores el resultat és obvi, ja que basta agafar $w_i = \varepsilon$. Si $\lvert w \rvert \geq 1$, considerem els següents objectes (tal com es mostra a la Figura \in[figura-area]): \startitemize[2] \item El conjunt d'índexos $I = \{(i,j) \mid i = 0, \ldots, {\lvert w \rvert}, j = 0, \ldots, {{\lvert w \rvert}^2}/2\}$. \item Per a tot $(i, j) \in I$, els punts $\sigma_{\pi(w(i))}(j)$ del graf de Cayley $\Gamma_{G, A}$, que indicarem amb $\sigma_{i}(j)$. \item Per a tots $(i, j), (i',j') \in I$, agafem un camí geodèssic $\rho_{(i,j)(i',j')}$ entre $\sigma_i(j)$ i $\sigma_{i'}(j')$. Escollim $\rho_{(i,{\lvert w \rvert}/2)(i+1,{\lvert w \rvert}/2)}$ de manera que sigui igual al camí geodèssic (de longitud unitat) sobre $w$ que uneix $\sigma_i(j)$ i $\sigma_{i+1}(j)$. \item Per a tot $(i, j) \in I$ tal que $(i+1,j), (i,j+1), (i+1,j+1) \in I$, sigui $\theta_{i, j}$ el camí determinat per la composició (en aquest ordre) dels camins geodèssics $\rho_{(i,j)(i,j+1)}$, $\rho_{(i,j+1)(i+1,j+1)}$, $\rho_{(i+1,j+1)(i+1,j)}$, $\rho_{(i+1,j)(i,j)}$, i $u_{i, j}$ la paraula corresponent a $\theta_{i,j}$. \item Per a tot $i \in \{0, \ldots, {\lvert w\rvert } -1\}$, sigui $\tau_i$ el camí determinat pels vèrtexs $\sigma_i(0) = \sigma_{i+1}(0) = 1$, $\sigma_i ({\lvert w \rvert}/2)$ i $\sigma_{i+1} ({\lvert w \rvert}/2)$ i per les composicions de camins \startformula \startmathalignment \NC \rho_{(i,0)(i,1)}\rho_{(i,1)(i,2)}\ldots \rho_{(i,{\lvert w \rvert}/2-1)(i,{\lvert w \rvert}/2)}, \NR[+] \NC \rho_{(i,{\lvert w \rvert}/2)(i+1,{\lvert w \rvert}/2)},\NR[+] \NC \rho_{(i+1,{\lvert w \rvert}/2)(i+1,{\lvert w \rvert}/2-1)}\ldots \rho_{(i+1,1)(i+1,0)}\rho_{(i+1,1)(i+1,0)}.\NR[+] \stopmathalignment \stopformula que uneixen, respectivament, $1$ amb $\sigma_i({\lvert w \rvert}/2)$, $\sigma_i({\lvert w \rvert}/2)$ amb $\sigma_{i+1}({\lvert w \rvert}/2)$, i $\sigma_{i+1}({\lvert w \rvert}/2)$ amb $1$. I indiquem amb $v_i$ la paraula corresponent a $\tau_i$. \stopitemize \placefigure [here] [figura-area] {Camins sobre $w$} {\startcombination[1*1] { \starttikzpicture[scale=1] % Els punts \filldraw (0,-4) circle (2pt); \filldraw (0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = 0.141 \filldraw (-0.4216,3.9603) circle (2pt); % primer punt: avaluo ({3*sin(\t r)},{4*cos(\t r)}); a t = -0.141 % Les línies entre els punts \draw (-0.4216,3.9603) -- (0.4216,3.9603); \draw plot[domain=-3.141:-0.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \draw plot[domain=0.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); \filldraw (0,-4) circle (2pt); % perquè me quedi el punt damunt. % Els combings \draw plot[domain=0:0.4216,smooth,variable=\t] ({-\t + \t* (\t - 0.4216)*sin(rand r)},{18.8812*\t -4 }); % el sentit d'omega \draw[decorate,decoration={markings,mark=at position .9 with {\arrow[blue,line width=1mm]{<}}}] plot[domain=-3.141:3.141,smooth,variable=\t] ({3*sin(\t r)},{4*cos(\t r)}); % Els noms \draw (0, -4.3) node {$1 \in G$}; %\draw (0.9, 8.3) node {$\pi(w(i))$}; %\draw (-0.9, 8.3) node {$\pi(w(i+1))$}; \draw (2.5, -3) node {$w$}; % Els noms dels camins %\draw (1, 0.3) node {$a$}; %\draw (3, 0.3) node {$b$}; %\draw (3.7, 1) node {$c$}; %\draw (3, 1.7) node {$d$}; %\draw (1, 1.7) node {$e$}; %\draw (0.3, 1) node {$f$}; %\draw (2.3, 1) node {$g$}; % PROVES %\draw[out=45,in=-45] (0,0) to (0.5,8); %\draw[color=blue,->] (0,0) .. controls (0.1,2) .. (0.2,3) .. controls (0.3,4) and (0.4,6) .. (0.5,8); %\draw (0,0) arc (-90:90:3 and 4); %\draw (0,0) arc (270:90:3 and 4); %\draw[color=green] plot[domain=-3.141:3.141,smooth,variable=\t] ({4*sin(\t + (.1 * rand) r)},{4*cos(\t r)}); %\draw (0,0) arc (-90:81.82:2 and 4); %\draw[decorate,decoration={random steps,segment length=2mm, amplitude=2pt}] (0,0) arc (-90:97.18:3.5 and 4); % \draw[very thin,color=gray] (-5.1,-5.1) grid [step=1] (5.9,5.9); % \draw[->] (-5.2,0) -- (6.2,0) node[right] {$x$}; % \draw[->] (0,-5.2) -- (0,5.2) node[above] {$y$}; % r = \frac{-1}{3} x + 3 %\filldraw (3,2) circle (2pt); %\filldraw (-3,4) circle (2pt); %\draw (-6,5) -- (6,1); %\draw (1, 3.5) node {$r$}; \stoptikzpicture} { } \stopcombination} \indentation Cada paraula $v_i$ és nul-homotòpica per ${\cal P}$, ja que el seu camí corresponent, $\tau_i$, forma un cicle dins el graf de Cayley $\Gamma_{G, A}$ (que té punt inicial i final $\sigma_i(0) = 1$). Per contrucció, \startformula w = v_0 \sharp (v_1 \sharp (\ldots, \sharp(v_{{\lvert w \rvert}-1})\ldots ), \stopformula llavors, per aplicació reiterada del Lema \in[lema-tecnic], tenim que \placeformula[vi] \startformula \text{area}(w) \leq \sum_{i=0}^{{\lvert w \rvert}-1} \text{area}(v_i). \stopformula \indentation D'altra banda, cada $u_{i,j}$ és nul-homotòpica per ${\cal P}$, ja que el seu camí corresponent, $\tau_{i,j}$, forma un cicle dins el graf de Cayley amb punt inicial i punt final $\sigma_i(j)$. A més, també per construcció, \startformula v_i = u_{i,0} \sharp (u_{i,1} \sharp (\ldots, \sharp(u_{i,{\lvert w \rvert}/2-1})\ldots ), \stopformula per la qual cosa, pel Lema \in[lema-tecnic], tenim que \placeformula[uij] \startformula \text{area}(v_i) \leq \sum_{j=0}^{{\lvert w \rvert}/2-1} \text{area}(u_{i,j}). \stopformula Aleshores, combinant (\in[vi]) i (\in[uij]) tenim que \placeformula[-] \startformula \text{area}(w) \leq \sum_{i=0}^{{\lvert w \rvert}-1} \sum_{j=0}^{{\lvert w \rvert}/2-1} \text{area}(u_{i,j}). \stopformula \indentation Pel Lema \in[lema0], tenim que cada $u_{i,j}$ té longitud $l(u_{i,j}) \leq 2 \varphi({\lvert w \rvert}/2)+2$. Aleshores, si reindexam aquest sumatori amb la bijecció \startformula \{u_{i, j} \mid i = 0, \ldots, {\lvert w \rvert}-1, j= 0, \ldots, {\lvert w \rvert}/2-1\} \longleftrightarrow \{u_k \mid k = 1, \ldots, {{\lvert w \rvert}^2}/2\}, \stopformula tenim que \startformula \text{area}(w) \leq \sum_{k=0}^{{{\lvert w \rvert}}^2/2} \text{area}(u_k) \stopformula amb $u_k$ paraules nul-homotòpiques per ${\cal P}$ tals que $l(u_k) \leq 2 \varphi({\lvert w \rvert}/2)+2$, que és el que volíem veure. \stopdemo \startproposition[desigualtat-dehn] Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$, ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$ i una secció $\sigma \colon G \to A^*$ amb amplada $\varphi$. Aleshores \startformula \delta_{{\cal P}} (n) \leq \frac{1}{2} \delta_{{\cal P}} (2 \varphi(n/2)+2) \cdot n^2. \stopformula \stopproposition \startdemo Sigui $w$ una paraula nul-homotòpica per ${\cal P}$. Pel Lema \in[subadditivitat-area], tenim que existeixen $u_k$ paraules nul-homotòpiques per ${\cal P}$, amb $k \in \{1, \ldots, {\lvert w \rvert}/2\}$, de longitud $l(u_k) \leq 2 \varphi({\lvert w \rvert}/2) +2$ tals que \startformula \text{area}(w) \leq \sum_{i=1}^{{{\lvert w \rvert}^2}/2} \text{area}(u_k). \stopformula Com que $l(u_k) \leq 2 \varphi({\lvert w \rvert}/2) +2$, aleshores $\text{area}(u_k) \leq \delta_{{\cal P}}(2 \varphi({\lvert w \rvert}/2) +2)$. A més, de forma òbvia, ${\lvert w \rvert} \leq l(w)$. Per tot això, tenim que \placeformula[-] \startformula \startsplit \NC \text{area}(w) \NC \leq \sum_{k=1}^{{{\lvert w \rvert}^2}/2} \text{area}(u_k) \NR \NC \NC \leq \sum_{k=1}^{{{\lvert w \rvert}^2}/2} \delta_{{\cal P}} (2 \varphi({\lvert w \rvert}/2) +2) \NR \NC \NC \leq \frac{1}{2} {\lvert w \rvert}^2 \cdot \delta_{{\cal P}} (2 \varphi({\lvert w \rvert}/2) +2) \NR \NC \NC \leq \frac{1}{2} {l(w)}^2 \cdot \delta_{{\cal P}} (2 \varphi({l(w)}/2) +2). \stopsplit \stopformula \indentation Llavors \placeformula[-] \startformula \startsplit \NC \delta_{{\cal P}} (n) \NC = \max \{ \text{area}(w) \mid w \text{ nul-homotòpica per }{\cal P}, l(w) \leq n\}\NR \NC \NC \leq \max \{ \frac{1}{2} {l(w)}^2 \cdot \delta_{{\cal P}} (2 \varphi({l(w)}/2) +2) \mid w \text{ nul-homotòpica per } {\cal P}, l(w) \leq n\} \NR \NC \NC \leq \frac{1}{2} n^2 \cdot \delta_{{\cal P}} (2 \varphi(n/2) +2) \stopsplit \stopformula que és el que volíem veure. \stopdemo \definemathcases[displaycases][style=\displaystyle] \startlema[equacio-funcional] Sigui $F\colon \naturalnumbers \to \reals $ una funció que cumpleix la recursió $F(n) = F(n-2) + 2 \ln n + \ln \frac{1}{2}$. Aleshores \placeformula[-] \startformula F(n) = \startdisplaycases \NC F(0) + 2 \ln n!! - \frac{n}{2} \ln 2 \MC \text{si } n \text{ parell} \NR \NC F(1) + 2 \ln n!! - \frac{n+1}{2} \ln 2 \MC \text{si } n \text{ senar} \NR \stopdisplaycases \stopformula on $n!!$ denota el doble factorial, definit recursivament per $1!! = 1$, $0!! = 1$, $n!! = n \cdot (n-2)!!$. \stoplema \startdemo Com que la recursió $F(n) = F(n-2) + 2 \ln n + \ln \frac{1}{2}$ és d'ordre $2$, per la Teoria d'equacions en diferències, la solució d'aquesta recursió és única si es coneixen les condicions inicials $F(1)$ i $F(0)$. Per tant, basta comprovar que si $F$ té aquesta forma, aleshores $F$ compleix la recursió, el que es pot veure amb un simple càlcul. \stopdemo \starttheorem[Theorema-n!!-Presentacions] Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$, ${\cal P} = \langle A \mid R \rangle$ una presentació finita de $G$ i $\sigma \colon G \to A^*$ una secció d'amplada $\varphi$ tal que existeix un $n_0 \in \naturalnumbers$ tal que $\varphi(n) < n-1$ per a tot $n \geq n_0$. Aleshores existeix $C$ constant, que només depèn de $n_0$ (i de ${\cal P}$), tal que \startformula \delta_{{\cal P}} (n) \leq C \cdot \frac{(n!!)^2}{2^{n/2}}, \stopformula per a tot $n \geq n_0$. A més, $C$ compleix que \startformula C \geq \frac{(\delta_{{\cal P}}(n_0)+1)\cdot 2^{\frac{n_0+1}{2}}}{(n_0!!)^2}. \stopformula \stoptheorem \startdemo Per la Proposició \in[desigualtat-dehn], tenim que \startformula \delta_{{\cal P}} (n) \leq \frac{1}{2} \delta_{{\cal P}} (2 \varphi(n/2)+2) \cdot n^2. \stopformula Com que $\varphi(n) < n-1$ per a tot $n \geq n_0$, llavors $\varphi(n) \leq n-2$, ja que la funció $\varphi$ només pren valors naturals. Per això, per a tot $n \geq n_0$, tenim que $2 \varphi(n/2) +2 \leq n-2$. Per tant, $\delta_{{\cal P}}$ compleix la desigualtat \placeformula[desigualtat-delta-p] \startformula \delta_{{\cal P}} (n) \leq \frac{1}{2} \delta_{{\cal P}} (n-2) \cdot n^2, \stopformula per a tot $n \geq n_0$. Sigui $f\colon \naturalnumbers \to \naturalnumbers\setminus \{0\}$ una funció tal que compleix que \placeformula[desigualtat-f] \startformula \startmathalignment \NC f(n) \NC = \frac{1}{2} f(n-2) \cdot n^2, \NR[+] \NC f(n_0) \NC \geq \delta_{{\cal P}}(n_0) \NR \stopmathalignment \stopformula La desigualtat (\in[desigualtat-delta-p]) implica que $\delta_{{\cal P}}(n) \leq f(n)$ per a tot $n \geq n_0$. Vegem-ho per inducció sobre $n$. \startitemize[1] \item Si $n= n_0$, aleshores $\delta_{{\cal P}}(n_0) \leq f(n_0)$ per construcció de $f$. \item Suposem-ho cert fins a $n$ i provem-ho per a $n+1$. Aplicant hipòtesi d'inducció i (\in[desigualtat-delta-p]), tenim que \startformula f(n+1) = \frac{1}{2} f(n-1) \cdot (n+1)^2 \geq \frac{1}{2} \delta_{{\cal P}} (n-1) \cdot (n+1)^2 \geq \delta_{{\cal P}} (n+1). \stopformula \stopitemize \indentation Considerem la funció $F \colon \naturalnumbers \to \reals$ definida per $F(n) = \ln f(n)$. Per (\in[desigualtat-f]) prenent logaritmes i operant, tenim que $F$ compleix que \placeformula \startformula \startmathalignment \NC F(n) \NC = F(n-2) + 2 \ln n + \ln \frac{1}{2}, \NR[+] \NC F(n_0) \NC = \ln f(n_0)\NR \stopmathalignment \stopformula Pel Lema \in[equacio-funcional], $F$ és de la forma \placeformula[-] \startformula F(n) = \startdisplaycases \NC F(0) + 2 \ln n!! - \frac{n}{2} \ln 2 \MC \text{si } n \text{ parell} \NR \NC F(1) + 2 \ln n!! - \frac{n+1}{2} \ln 2 \MC \text{si } n \text{ senar} \NR \stopdisplaycases \stopformula Agafant $f(n_0) \geq \delta_{{\cal P}}(n_0) + 1 > 0$, $F(0) = \ln C_1$ i $F(1) = \ln C_2$ amb $C_1$ i $C_2$ constants, que només depenen de $n_0$ i de $\delta_{{\cal P}}$, que satisfan \startformula \startmathalignment \NC C_1 \NC = \frac{f(n_0) \cdot 2^{n_0/2}}{(n_0!!)^2}, \NR[+] \NC C_2 \NC = \frac{f(n_0) \cdot 2^{\frac{n_0+1}{2}}}{(n_0!!)^2},\NR \stopmathalignment \stopformula aleshores tenim que $F(n_0) = \ln f(n_0)$. Notem que és necessari agafar $f(n_0) > 0$ per assegurar l'existència de $\ln C_1$ i $\ln C_2$ i que sempre podem fer aquesta elecció perquè $f(n_0) \geq \delta_{{\cal P}}(n_0)$. Per tot això, $F$ té la forma \placeformula[-] \startformula F(n) = \startdisplaycases \NC \ln C_1 + 2 \ln n!! - \frac{n}{2} \ln 2 \MC \text{si } n \text{ parell} \NR \NC \ln C_2 + 2 \ln n!! - \frac{n+1}{2} \ln 2 \MC \text{si } n \text{ senar} \NR \stopdisplaycases \stopformula \indentation De forma clara, $F(n) \leq \ln C_2 + 2 \ln n!! - \frac{n}{2} \ln 2$, per la qual cosa tenim que \startformula \delta_{{\cal P}} (n) \leq f(n) = e^{F(n)} \leq C_2 \cdot \frac{(n!!)^2}{2^{n/2}}, \stopformula per a tot $n \geq n_0$. Llavors si diem $C= C_2$, tenim el que volíem. \stopdemo \starttheorem Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$ i $\sigma \colon G \to A^*$ una secció d'amplada $\varphi$ tal que existeix $n_0 \in \naturalnumbers$ tal que $\varphi(n) < n-1$ per a tot $n \geq n_0$. Aleshores la funció de Dehn de $G$, $\delta_G$, safisfà \startformula \delta_{G} (n) \simeq \frac{(n!!)^2}{2^{n/2}}, \stopformula per a tot $n \geq n_0$. \stoptheorem \startdemo Sigui ${\cal P} = \langle A \mid R\rangle$ una presentació qualsevol de $G$. Pel Teorema \in[Theorema-n!!-Presentacions] existeix una constant $C_{{\cal P}, n_0}$, que depèn de ${\cal P}$ i de $n_0$, tal que \startformula \delta_{{\cal P}} (n) \leq C_{{\cal P},n_0} \cdot \frac{(n!!)^2}{2^{n/2}}. \stopformula per a tot $n \geq n_0$. Com que les funcions de Dehn de dues presentacions de $G$ són $\simeq$-equivalents \cite[extras={, Proposició~1.3.3}][bridson-tutorial], llavors la funció de Dehn, $\delta_G$, és $\simeq$-equivalent a $\delta_{\cal P}$ i, per tant, \startformula \delta_G \simeq \frac{(n!!)^2}{2^{n/2}}, \stopformula per a tot $n \geq n_0$. \stopdemo \startnote \startitemize[1] \item Aquest teorema redueix de forma notable les fites superiors de les funcions de Dehn conegudes per grups seccionables. Bridson provà que si $G$ és un grup tal que admet una secció d'amplada $\varphi$ tal que $\varphi(n) < n-1$ assimptòticament, aleshores la seva funció de Dehn $\delta_G$ té ordre $e^{kn^3}$ \cite[extras={, Teorema~4.3}][bridson], i Riley demostrà que si $G$ admet una secció {\em geodèssica} tal que $\varphi(n) < n-1$ de forma assimptòtica, aleshores $\delta_{G}(n)$ és equivalent linealment a $n!$ \cite[extras={, Teorema~2}][riley]). Com que $(n!!)^2$ és una fita superior més baixa i no és equivalent linealment a cap de les dues fites anteriors, aleshores aquest teorema millora les fites. Record que $f$ és equivalent linealment a $g$ si, i només si, $f \preceq g$ i $g \preceq f$, on $f \preceq g$ significa que existeix una constant $k > 0$ tal que $f(x) \leq k g(kx + k) + kx + k$ per a tot $x \geq 0$. \item Tenim molt més que $\delta_G (n) < (n!!)^2$, tal com posa de manifest l'apartat $a$ del teorema. \item La Proposició \in[desigualtat-dehn] també implica fites inferiors, molt grolleres per cert. \stopitemize Podem confirmar aquest teorema amb els resultats següents: \starttheorem[teorema4.2millorat]Siguin $G$ un grup, $A$ un conjunt finit de generadors de $G$, $\sigma \colon G\rightarrow A^*$ una secció de $G$ respecte de $A$ i $F\colon \naturalnumbers \rightarrow \naturalnumbers$ una funció qualsevol tal que $F(n) \geq 1$ per a tot $n > 0$. Si $\varphi(n) < n-1$ per a $n$ suficientment gran i $F$ compleix que \startformula F(n) \geq \frac{1}{2} n^2 F\big(2 \varphi({n}/{2}) + 2\big) \stopformula per a $n$ suficientment gran, aleshores $F$ és una funció isoperimètrica de $G$. \stoptheorem \startdemo Basta veure que $F$ és una funció isoperimètrica per a alguna presentació finita de $G$, és a dir, que existeix una presentació finita ${\cal P}$ de $G$ tal que qualsevol paraula nul-homotòpica $w$ de longitud $l(w) \leq n$ satisfà que $\text{area}(w) \leq F(n)$. Sigui $N$ tal que $\varphi(n) < n-1$ i $F(n) \geq \frac{1}{2} n^2 F(2 \varphi(n/2) +2)$ per a tot $n \geq N$. Tenim que ${\cal P} = \langle A \mid R_0 \rangle$ és una presentació finita de $G$, on $R_0 = \{w \in A^* \mid w \text{ nul-homotòpica, } l(w) \leq 2N\}$ \cite[extras={, Proposició~3.1}][bridson]. Sigui $w$ una paraula nul-homotòpica per ${\cal P}$. Provem per inducció sobre $l(w) $ que $F$ és una funció isoperimètrica per aquesta presentació. \startitemize[1] \item Si $w$ és una paraula nul-homotòpica tal que $l(w)\leq 2N$, aleshores $\text{area}(w) = 1$ (ja que, per estar $w \in R_0$, existeix un diagrama de van Kampen ${\cal D}$ sobre ${\cal P}$ que té $w$ com a frontera i com a única cara. A més, $C({\cal D}) = \text{area}(w)= 1$). Com que $F(n) \geq 1$ per a tot $n \geq 1$, tenim que $\text{area}(w) = 1 \leq F(2N)$. \item Suposem que $l(w) = n > 2N$ i que qualsevol paraula nul-homotòpica de longitud $r < n$, $w_r$, és tal que $\text{area}(w_r) \leq F(r)$. Vegem que $\text{area}(w) \leq F(n)$. Pel Lema \in[subadditivitat-area], existeixen $u_k$ paraules nul-homotòpiques per ${\cal P}$, amb $k = \{1, \ldots, n^2/2\}$, tals que \startformula \text{area}(w) \leq \sum_{i=1}^{n^2/2} \text{area}(u_k) \stopformula i $l(u_k) \leq 2 \varphi(n/2) + 2$. Com que $\varphi(n) < n-1$, tenim que $l(u_k) \leq n-2$ i per tant podem aplicar hipòtesi d'inducció. Aplicant la desigualtat sobre $F$ que suposam per hipòtesi, tenim que \placeformula[-] \startformula \startsplit \NC \text{area}(w) \NC \leq \sum_{i=1}^{n^2/2} \text{area}(u_k) \NR \NC \NC \leq \sum_{i=1}^{n^2/2} F(2 \varphi(n/2) + 2) \NR \NC \NC \leq \frac{1}{2} n^2 F(2 \varphi(n/2) + 2) \NR \NC \NC \leq F(n). \stopsplit \stopformula \stopitemize \stopdemo \startcorollary $(n!!)^2$ és una funció isoperimètrica. \stopcorollary \startdemo Pel Teorema \in[teorema4.2millorat] basta veure que la funció $n \mapsto (n!!)^2$ compleix \stopdemo \completepublications[criterium=cite] %all per tots \stoptext

2 6

Limited with rule?
by Matthijs Kooijman 10 Jun '09

10 Jun '09

Hi all, I've been trying to create a horizontal rule of limited width, using MkIV. My best approach so far is using a \framed with only a bottom frame: \framed[frame=off,bottomframe=on,width=.5\textwidth]{} However, this is not quite elegant. Context provides two commands for drawing lines, \hairline and \thinrule (which seem to do the same from looking at their definition in pack-rul.mkiv, though \hairline does not seem to respond to \setupthinrules for some reason I cannot discern...). However, \setupthinrules accepts a lot of options (including height and depth, which get passed to \hrule, but there is no width option (nor does there seem any way to get \thinrule to pass a width to \hrule). Another attempt to put a frameless \framed around the \hairline (which gets as wide as the containing box) failed as well. The line kept getting vertical, even when I sprinkeled some \dontleavehmod or \pars around... Any suggestions on how to do this? Gr. Matthijs

2 3

\typebuffer with typing style
by Matthijs Kooijman 10 Jun '09

10 Jun '09

Hi, I'm trying to use a buffer together with a custom typing style using the latest beta with MkIV, but so far I've only managed to do this using \startFOO and \stopFOO inside the buffer: \definetyping[FOO][option=FOO] \startbuffer[bar] \startFOO baz \stopFOO \stopbuffer \getbuffer[bar] Since the \getbuffer is really inside some self-defined command, I'd like to put the startFOO / stopFOO in there as well. However, I can't seem to find a way to do this, since \startFOO \getbuffer[bar] \stopFOO gives me compile errors. It seems the canonical way to define typing and buffers is using \typebuffer, but that only seems to work with the default typing style. I'd like to do the following: \definetyping[FOO][option=FOO] \startbuffer[bar] baz \stopbuffer \typebuffer[FOO][bar] From looking at buff-ini.mkiv it seems typebuffer has some code to handle a second argument, but it seems to always throw it away (as far as I can understand this Tex stuff... :-). Is there some way to achieve this? Would it be good to make \typebuffer support this if there isn't? Gr. Matthijs

2 5

URL colors are gone
by Vyatcheslav Yatskovsky 09 Jun '09

09 Jun '09

Hello, I use \useURL[abc] [http://abc.com] [] [http://abc.com] but in mkiv it is typeset without color. \setupinteraction[state-start,color=blue] does not help. Regards, Vyatcheslav

1 0

Re: [NTG-context] LilyPond module 2009-06-05
by Vyatcheslav Yatskovsky 09 Jun '09

09 Jun '09

Thanks, Hraban But my problem (under Windows) persists: no eps or pdfs are created. Only "lily1-lilypond-1.tmp" and "lily1-lilypond-1.tmp.md5" in "lilytemp" folder. Installing GhostScript didn't help. Regards, Vyatcheslav

3 4

\lastpagenumber always 1
by Peter Münster 09 Jun '09

09 Jun '09

Hello, \lastpagenumber is 1 but should be 5: \setupfootertexts[\pagenumber/\lastpagenumber] \starttext \dorecurse5{bla\page} \stoptext Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

1 0

problem with \placeheadtext
by Peter Münster 09 Jun '09

09 Jun '09

Hello, \placeheadtext[chapter] prints the section title: \starttext \chapter{my chapter title} \section{my section title} test: \placeheadtext[chapter] \stoptext Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

1 0

gobbling space after "]"
by Peter Münster 09 Jun '09

09 Jun '09

Hello, IMHO space should be gobbled after \startmode[...], and it should *not* be gobbled after \externalfigure[...]. But ConTeXt does it the other way round: \enablemode[test] \starttext bla \startmode[test] text for test-mode \stopmode bla \externalfigure[hacker][width=3em] bla\blank[big] Now with workarounds:\blank[big] bla \startmode[test]% text for test-mode \stopmode bla \externalfigure[hacker][width=3em]\ bla \stoptext What do you think? Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

2 1

catcode regime in section title
by Peter Münster 09 Jun '09

09 Jun '09

Hello, I still need the "\setcatcodetable\prtcatcodes" in the following example. Is this the right way to do such things in the future or only a temporary workaround? \unprotect \def\bla@bla{sec title} \def\mySection{{\setcatcodetable\prtcatcodes\section{\bla@bla}}} \protect \starttext \mySection bla bla \stoptext Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

2 1

Where to store typescripts ?
by Nicolas Girard 09 Jun '09

09 Jun '09

Hi, Where should typescript files be stored ? Is it possible to store them in user space, eg in a subdirectory of Luatex cache (when using luatex) ? Thanks in advance! Nicolas

6 19

\nonknuthmode and \environment
by Peter Münster 09 Jun '09

09 Jun '09

Hello, Strange things happen, if \nonknuthmode is in an environment. Here is my environment file: \startenvironment e-test \nonknuthmode \stopenvironment And here the test file with error "Missing $ inserted": \environment e-test \starttext X_X \stoptext If I add \nonknuthmode *after* "\environment e-test", the same error will occur. If I add \nonknuthmode *before* "\environment e-test", there won't be such problem. Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

2 1

Bullet size inconsistent with font size in item group
by Michael Bynum 08 Jun '09

08 Jun '09

Through the help of this mailing list I was able to resize the font for different levels of an item group using the inner command; however, this has had some unexpected effects on the size of my bullets. The first bullet in a list is sized based on the preceding font size, while all of the other bullets are sized based on the specified font size for that item group. That probably wasn't clear, but I'm hoping this example will explain what I mean. I attached a file of my output from this example. \definesymbol[1][\hbox{$\bullet$}] \definesymbol[2][\hbox{$\circ$}] \defineitemgroup[bullet][levels=2] \setupitemgroup[bullet][1][1][joinedup,inbetween={\blank[3*small]},inner={\switchtobodyfont[20pt]}] \setupitemgroup[bullet][2][2][joinedup,inbetween={\blank[3*small]},inner={\switchtobodyfont[15pt]}] \starttext \startbullet \item Test \item Test \startbullet \item Test \item Test \stopbullet \stopbullet \stoptext Mike

1 0

Intersection symbol, Set theory
by curiouslearn 08 Jun '09

08 Jun '09

Hi, I want the intersection symbol in the file. I tried $\cap$, however that does not work. I am using This is LuaTeX, Version snapshot-0.35.0 (Learn_Corbae_Stinchcombe_Zeman.tex ConTeXt ver: 2009.03.18 21:58 MKIV fmt: 2009.3.31 int: english/english I get the following error: ! Undefined control sequence. \normalcap ->\dohandlemathtoken {cap} l.25 ...t A $ then $ f(A \cap B) \subset f(A) \cap f(B) $. Do I need to upgrade to a newer version?

2 2

Verbatim / prettyprinting in mkIV
by Matthijs Kooijman 08 Jun '09

08 Jun '09

Hi all, I've been struggling with verbatim printing in MkIV for a while now and found some confusing things. I did finally get things working, but after quite some effort. I'd like to hear if my conclusions are correct, perhaps I can put them on the wiki then. I was trying to set up some custom pretty printing scripts, using lua (since I'd rather not learn complete tex scripting :-p). Looking at the files in /usr/share/texmf/tex/context/base and the wiki (Verbatim_text talks about verb-foo.tex files), I created a file called verb-foo.lua. I put this beside my document at first, and then in /usr/share/texmf/tex/context/base when it did not work, but neither worked. I tried setting things up as follows: \installprettytype [FOO] [FOO] \definetyping[FOO][option=FOO] \startFOO blub \stopFOO Trying to trace the code, I worked out things should work as follows: \installprettytype sets the "evalue" \??ty\??tyFOO to point at FOO \definetyping call \setupprettiesintypeFOO, which finds looks up the above evalue, finds FOO and then turns that into verb-foo and calls \ctxloadluafile{verb-foo}{}. This sets up the buffers.visualizers.foo value in lua. When actually starting a typing environment, dodotypeA or dodotypeD call buffers.hooks.flush_line, which in turn calls buffers.visualizers.foo.flush_line. The above didn't happen for me, so I tried manually loading the lua file using \ctxloadluafile{verb-foo}{}. After this, things started working for some reason. When looking closer and installing some \writestatus lines in core-ver.mkiv, I found that \setupprettiesintype was never actually called! Closer inspection showed that the entire core-ver.mkiv is never loaded when running "context --make". However, there is a second file, buff-ver.mkiv which closely resembles core-ver.mkiv and which is loaded. An important difference, however, is that buff-ver loads pret-foo instead of verb-foo (or rather, uses the value of \f!prettyprefix, which is set to "pret-" in mult-sys.tex). Renaming my lua file to pret-foo.lua made context find it exactly as it should, also when putting the file next to the main document. So, my main question was, are the verb-*.lua and core-ver.text files still used in any way? I just checked the minimals tree, and found out they have been removed already (but I didn't have -d in my rsync commandline to actually remove them). Looking at the previous version I was running (2009.05.20 beta) it seems that this change was actually pretty recent, so I mostly created this confusing situation by upgrading today (because my verbatim file was not properly loaded). I'm not so sure why it was not working before then, but at least it is working now. Heh, this is what you get when you write an email while you are still trying things out. All this buildup to get to a question, when the question is not even relevant. As for another relevant question: Is my analysis of how things are supposed to work correct? Then I might put something like it on the wiki. Also, it seems that \ctxloadluafile does not give an error when the file was not found. If it would have, things would probably have been a lot easier. Is there any compelling reason to make it fail silently? Gr. Matthijs

3 2

TexPaste alpha - my Win application converting Word/HTML to TeX
by Vyatcheslav Yatskovsky 08 Jun '09

08 Jun '09

Hello, I'm glad to report that I made a simple application (sorry, only forWindows at the moment) that coverts text from Ms Word (or other editors) or HTML pages (web sites) into TeX. DOWNLOAD LINK (280 KB): http://ul.to/hmpy60 The app recognizes at the moment only following formats/tags: Bold (<b>), Italic (<i>), Header 1 (<h1>), Header 2 (<h2>), Header 3 (<h3>). It coverts NOBREAK_SPACE (A0) into ~, &nbsp into \enskip, " into ", & into \&, and < > into < >. It is UTF-8 ready. USAGE: copy desired text fragment from Word or web page into clipboard, and click big "Get..." button and see the result in the bottom field. Click "Copy Result" to get TeX-formatted text back into the clipboard, and paste it into your editor. KNOW ISSUES: Some crap from Word formatting like  tags happens to leak, but it is easier at the moment to delete it manually. And sorry... awful interface. It is very-very first alpha, I want to show it just as proof-of-concept and to get some feedback. Actually, I did it for myself to simplyfy conversion from Word into TeX. I have some documents to be converted (e.g., lecture notes), and this happens to be easy task with my tool :). Best, Vyatcheslav

5 6

Can't set typescript
by Maurício 07 Jun '09

07 Jun '09

I'm trying this small test: %%%%% \enableregime[utf] \usetypescriptfile[type-xtx] \usetypescript[gentium] \setupbodyfont[gentium] \starttext \showbodyfont \stoptext %%%%% It's supposed to select 'gentium' as typeface, but the chart shown by 'showbodyfont' says I'm using 'modern'. Am I missing something? I'm using minimal install, updated yesterday (although I have this problem for at least two weeks). Thanks, Maurício

2 4

labels and new structure code
by Thomas A. Schmitz 07 Jun '09

07 Jun '09

Hi all, Hans, here is a bug that remains with the new structure code after Hans fixed many things two weeks ago. I want a counter that is reset at every odd chapter. This works as expected in mkii (and used to work in mkiv), but complains about a "Missing number, treated as zero" and fails to compile in current beta: \setupcolors[state=start] \setuphead [section] [command={{\determineheadnumber[section]}\ifodd\currentheadnumber \resetSlideNumber\incrementSlideNumber \else\incrementSlideNumber \fi}, expansion=yes] \definelabel[SlideNumber][headstyle=normal,way=bytext] \define\SLN{\color[red]{ [\nextSlideNumber]}} \starttext \section{One} should be 2: \SLN \section{Two} should be 4: \SLN \section{Three} should be 2 again: \SLN \section{Four} should be 4 again: \SLN \stoptext Even if you comment out the command=... line, you'll see that labels in mkiv still don't quite do what they should. All best Thomas

2 4

[OT] Donald Knuth: Mathematical Ideas, or Algorithms, Should Not Be Patented
by luigi scarso 07 Jun '09

07 Jun '09

http://www.groklaw.net/article.php?story=20090603224807259 -- luigi

1 0

Re: [NTG-context] ntg-context Digest, Vol 60, Issue 25
by Abhishek Seth 07 Jun '09

07 Jun '09

Hi, I have emacs 23.0.91.1 on Windows XP. I downloaded cedet-1.0pre6 and followed the instructions in the file cedet-build.el, ie 1) M-x eval-buffer 2) M-x cedet-build-in-default-emacs I get following status report from the build process: CEDET BYTE COMPILATION STATUS: Step 1: Byte compile EIEIO...not needed Step 2: EDE Autloads...done. Step 3: Semantic Autloads...done. Step 4: SRecode Autloads...done. Step 5: Load common/cedet.el ...done Step 6: Turning on EDE ... During step 6, i get the following message in the echo area: wrong type argument: number-or-marker-p (2048 1 . 59092) Could someone suggest a solution for this? On Fri, Jun 5, 2009 at 3:30 PM, <ntg-context-request(a)ntg.nl> wrote: > Send ntg-context mailing list submissions to > ntg-context(a)ntg.nl > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.ntg.nl/mailman/listinfo/ntg-context > or, via email, send a message with subject or body 'help' to > ntg-context-request(a)ntg.nl > > You can reach the person managing the list at > ntg-context-owner(a)ntg.nl > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of ntg-context digest..." > > > Today's Topics: > > 1. Bug in mkiv math mode: missing \longrightarrow (Otared Kavian) > 2. LilyPond module 2009-06-05 (Henning Hraban Ramm) > 3. Re: Bug in treatment of spaces in mathmode mkiv (Hans Hagen) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 5 Jun 2009 10:08:45 +0200 > From: Otared Kavian <otared(a)gmail.com> > Subject: [NTG-context] Bug in mkiv math mode: missing \longrightarrow > To: mailing list for ConTeXt users <ntg-context(a)ntg.nl> > Message-ID: <670838DC-F3A0-472E-B178-F4F9B85F9CDA(a)gmail.com> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes > > Hi Hans, > > Testing your last night's beta, > LuaTeX, Version beta-0.40.1-2009050813 (Web2C 7.5.7) > ConTeXt ver: 2009.06.04 22:20 MKIV fmt: 2009.6.4 int: english/ > english > I noticed that \longrightarrow is missing in mkiv, while everything is > correct in mkii. > Here is a minimal example: > > %%% begin example > \starttext > Consider a continuous function $f : (0,1) \longrightarrow E$, where $E > $ is a Banach space, as above. > > Consider a continuous function $f : (0,1) \rightarrow E$, where $E$ is > a Banach space, as above. > \stoptext > > %%% end example > > In mkiv nothing appears for \longrightarrow, although the typesetting > goes through. > > Thanks for your attention: OK > > > ------------------------------ > > Message: 2 > Date: Fri, 5 Jun 2009 10:19:28 +0200 > From: Henning Hraban Ramm <hraban(a)fiee.net> > Subject: [NTG-context] LilyPond module 2009-06-05 > To: mailing ConTeXt users list for <ntg-context(a)ntg.nl> > Message-ID: <C4E18F24-4283-4A88-AB40-01654F58124E(a)fiee.net> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes > > Just released the latest version with some fixes: > - pstopdf is only called if there's no pdf created (seems like > LilyPond creates PDFs by itself even in EPS mode now) > - before trying to move a file, the target gets deleted if it already > exists > - some more code cleanup > > Is someone in need of a MkII version? (I could make that, but only > without the file system features.) > > BTW Mojca is planning for a general tempdir feature for all modules; > probably the setup syntax will change a bit if it's ready. > > > Greetlings from Lake Constance! > Hraban > --- > http://www.fiee.net/texnique/ > http://wiki.contextgarden.net > https://www.cacert.org (I'm an assurer) > > > > ------------------------------ > > Message: 3 > Date: Fri, 05 Jun 2009 10:37:07 +0200 > From: Hans Hagen <pragma(a)wxs.nl> > Subject: Re: [NTG-context] Bug in treatment of spaces in mathmode mkiv > To: mailing list for ConTeXt users <ntg-context(a)ntg.nl> > Message-ID: <4A28D933.6000603(a)wxs.nl> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Aditya Mahajan wrote: > > > colon needs a bit more care. The literal : should be a mathrel, while > > \colon should be a punctuation. I do not know how to set this using > > mathspec. > > hm, we had two mathname=colon's, so i removed the 0x003A > > > ----------------------------------------------------------------- > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com > | www.pragma-pod.nl > ----------------------------------------------------------------- > > > ------------------------------ > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : ntg-context(a)ntg.nl / > http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://tex.aanhet.net > archive : https://foundry.supelec.fr/projects/contextrev/ > wiki : http://contextgarden.net > > ___________________________________________________________________________________ > > > End of ntg-context Digest, Vol 60, Issue 25 > ******************************************* >

1 1

Crop marks and \setuplayout[nx,ny]
by Nicolas Girard 07 Jun '09

07 Jun '09

Hi, the following code, which I ran with context --mode=print shows crop marks in the middle if the sheet, overlapping the pages. It is legitimate to specify dy=0pt in order to minimize paper cuts. It seems to me like, in the case when dy=0pt, the code dealing with crop marks should try not to overlap the pages, or suppress the marks between two columns of pages. What do you think ? Is there currently a solution to this ? Cheers, Nicolas ============ \definepapersize[BC][width=85mm,height=54mm] \definelayer[blocks][width=85mm,height=54mm] \doifmodeelse{print}{ \setuppapersize[BC][A4] \setuplayout[nx=2,ny=5,dx=1cm,dy=0pt] \setuplayout[location=middle,width=fit,height=fit,marking=on] }{ \setuppapersize[BC][BC] \showframe[edge] } \setuppagenumbering[location=,state=stop] \def\ZapfinoMedium{} \def\ZapfinoBig{} \setupbackgrounds[page][background=blocks] \starttext \startstandardmakeup \setlayer[blocks][preset=rightbottom]{% \externalfigure[g-wurf][height=4.7cm]} \setlayer[blocks][preset=middletop,voffset=1mm]% {\ZapfinoMedium Title} \startbuffer \vbox{% \startlines Some Names of Some Cats \vskip-3pt\tfx smaller \vskip-5pt text \stoplines} \stopbuffer \setlayer[blocks][voffset=1.5cm,hoffset=2mm]{\getbuffer} \startbuffer \vbox{% Name and\hfill\break Address }% \stopbuffer \setlayer[blocks][preset=leftbottom,offset=1.5mm,hoffset=0.5mm]{\getbuffer} \setlayer[blocks][preset=rightbottom,offset=1.5mm]{www.samtfeld.de} \stopstandardmakeup \stoptext

3 3

Substititute ?
by Nicolas Girard 07 Jun '09

07 Jun '09

Hi, shouldn't "substititute" be substi..., err..., replaced with "substitute", in rlxtools.rb, lines 115, 148 and 207 ? Cheers, Nicolas

2 1

3D PDF support (AKA asymptote support)
by Michail Vidiassov 07 Jun '09

07 Jun '09

Dear Hans, Mojca and All, a draft for an analog of LaTeX movie15 package for including Adobe Reader compatible 3d models into PDF files is at http://www.iaas.msu.ru/tmp/movie15context.tgz . Almost no docs/comments inside, but questions are of course welcome. You'd better take a brief look at part 5.2 of movie15 docs http://www.ctan.org/tex-archive/macros/latex/contrib/movie15/doc/movie15.pdf and part 13.6 of ISO/Adobe PDF spec http://www.adobe.com/devnet/acrobat/pdfs/PDF32000_2008.pdf to understand what are the settings. Since I lack understanding of ConTeXt/luatex combo and have to pass data for dictionaries containing other dictionaries to 3D model embedder I had to abuse two existing parameters, "control" and "display" and rely on sane lua code being put there. And even the limited parameter correctness checks do not report problems, they just silently fail to execute. One more option to deal with 3D models is not to embed them as annotations in the main PDF file, but to make a PDF with only 3D model in it and attach it to the main PDF, linking to a clickable 2D image (like attachfile2 LaTeX package). Donno if that functionality is in working condition now and how to use it. Sincerely, Michail

4 11

Bug in mkiv math mode: missing \longrightarrow
by Otared Kavian 07 Jun '09

07 Jun '09

Hi Hans, Testing your last night's beta, LuaTeX, Version beta-0.40.1-2009050813 (Web2C 7.5.7) ConTeXt ver: 2009.06.04 22:20 MKIV fmt: 2009.6.4 int: english/ english I noticed that \longrightarrow is missing in mkiv, while everything is correct in mkii. Here is a minimal example: %%% begin example \starttext Consider a continuous function $f : (0,1) \longrightarrow E$, where $E $ is a Banach space, as above. Consider a continuous function $f : (0,1) \rightarrow E$, where $E$ is a Banach space, as above. \stoptext %%% end example In mkiv nothing appears for \longrightarrow, although the typesetting goes through. Thanks for your attention: OK

3 3

Horizontal bar vs emdash
by Maurício 07 Jun '09

07 Jun '09

Hi, I know I can input an emdash with: \emdash Is there an alternative when I want an horizontal bar? See this, where I found they can be different: http://en.wikipedia.org/wiki/Quotation_mark,_non-English_usage#Quotation_da… They have different unicode numbers, U+2014 and U+2015. (Is there something similar to \showcharacters? I read in tex/texmf-context/tex/context/base/enco-ini.mkiv it's in a todo list, but I thought it's worth asking.) Thanks, Maurício

2 1

Font sizes in item group
by Michael Bynum 06 Jun '09

06 Jun '09

I am trying to find out it there is a way to set the font size for each level of an item group so that as you go down the item group, the font decreases a small amount. I assume there must be a way, but I haven't found anything looking around the manuals. Here is my current item group. \defineitemgroup[bullet][levels=3] \setupitemgroup[bullet][1][1] \setupitemgroup[bullet][2][2] \setupitemgroup[bullet][3][3] Thanks, Mike

2 2

Printen van code met een PDF overlay, makkelijk met ConTeXt?
by Gerben Wierda 06 Jun '09

06 Jun '09

Beste allemaal, ik wil broncode uitprinten met regelnummers op pagina's met een bepaalde overlay. Ik heb dus ascii text files als input (de code) een overlay in PDF en wil deze gecombineerd printen. Ik zat te denken: is een ConTeXt based workflow hier een mogelijke oplossing? De regelnummers e.d. kan ik eventueel met het pr programma genereren. Met vriendelijke groet, Gerben

5 11

ppchtex experience
by Helge Kruse 06 Jun '09

06 Jun '09

Hello, I need to write some chemical strucutures in LaTeX and dont know, what is the best tools to do it. The structures are crown ether and cryptands. Yes, and I am unexperienced. 1) What would be the way to write a [18]crown-6 (http://en.wikipedia.org/wiki/Crown_ether) structure formula with PPCHTEX? 2) Is there any kind of repository, where I can take common structures and/or adapt these to the required structures? Regards, Helge

3 2

\from query
by Bowen Alan C. 05 Jun '09

05 Jun '09

Is there a way to configure \from[MyExternalDocument] or \useexternaldocument so that when the link to MyExternalDocument is selected in the PDF output file, Acrobat opens a new window? Alan

2 2

simple-slides: Last slide not formatted
by Michael Bynum 05 Jun '09

05 Jun '09

I am having a problem with the last slide of my presentation using the simple-slide module. No matter what style I use, the last slide doesn't follow the style chosen and doesn't contain the specified title. In the example below, the title slide and slides 1 - 3 are correctly formatted, but slide 4 only displays the text "This is the forth slide" in black text on a white background. Is there something I'm doing wrong? \usemodule[simpleslides][style=BigNumber] \setupTitle [ title={Title of Presentation}, author={Author of Presentation}, date={Today}, ] \starttext \placeTitle \SlideTitle {The first slide} This is the first slide. \SlideTitle {The second slide} This is the second slide. \SlideTitle {The third slide} This is the third slide. \SlideTitle {The forth slide} This is the forth slide. \stoptext Thanks, Mike

3 6

accented characters (UTF) in filename
by Peter Münster 05 Jun '09

05 Jun '09

Hello, It seems, that one cannot use accented characters in file-names. Example: "context état.tex" fails with: This is LuaTeX, Version beta-0.40.1-2009051420 (Web2C 7.5.7) \write18 enabled. ! I can't find file `./?at.tex'. <*> ./état.tex Please type another input file name: Is it possible to resolve this problem? Cheers, Peter -- Contact information: http://pmrb.free.fr/contact/

2 1

Bug in treatment of spaces in mathmode mkiv
by Otared Kavian 05 Jun '09

05 Jun '09

Sorry for reposting this message sent this morning: I thought it didn't go through… Hi Hans, I noticed that in math mode the spacement of some symbols are incorrect while using mkiv (they are correct in mkii). Here is an example %%%%% begin example \starttext Set $a := bc^{-1}$. \stoptext %%%%% end example In this example, there should be a space before and after ":=" as one may see it readily in mkii (and indeed in plain TeX…). Best regards: OK

3 4

LilyPond module 2009-06-05
by Henning Hraban Ramm 05 Jun '09

05 Jun '09

Just released the latest version with some fixes: - pstopdf is only called if there's no pdf created (seems like LilyPond creates PDFs by itself even in EPS mode now) - before trying to move a file, the target gets deleted if it already exists - some more code cleanup Is someone in need of a MkII version? (I could make that, but only without the file system features.) BTW Mojca is planning for a general tempdir feature for all modules; probably the setup syntax will change a bit if it's ready. Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer)

1 0

new beta
by Hans Hagen 04 Jun '09

04 Jun '09

hi, i uploaded a new beta. a few small fixes, mostly related to metafun (i'll look into the reported structure bugs later) in the process of updating the metafun manual, i also enabled the multiple mp instance; this is a typical example where luatex beats pdftex in runtime (on my machine 47 seconds for 350+ pages with over 1700 mp graphics including a bunch of subruns; ) you can add definitions per instance, like: \startMPdefinitions{extrafun} color MyColor ; MyColor = red ; \stopMPdefinitions \startMPcode{metafun} fill fullsquare scaled 1cm withcolor MyColor ; \stopMPcode new instances, like the predefined extrafun, are defined as \defineMPinstance[extrafun][format=metafun,extensions=yes,initializations=yes] so, if you use tricky mp code, you can create your own instance (predefined are metafun, extrafun, nofun and metapost) you can redirect to an instance with a prefix: \useMPgraphic{nofun::purempgraphic} still somewhat experimental Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

1 0

Reference to equation fails
by richard.stephens＠converteam.com 04 Jun '09

04 Jun '09

There seems to be a problem in the referencing to equations in the version of MKIV I'm using: ConTeXt ver: 2009.06.03 11:48 MKIV fmt: 2009.6.3 int: english/english In the following code, the reference to the equation fails, resulting in '??'. Using MKII everything is fine. \starttext \placeformula[eq:pythag] \startformula a^2 = b^2 + c^2 \stopformula Pythagoras proposed \in{equation}[eq:pythag]. \stoptext Best regards, Richard Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail

1 0

Captials in section head
by richard.stephens＠converteam.com 04 Jun '09

04 Jun '09

I need all section heads to be in full-size capitals, so I tried: \setuphead[section][textcommand=\uppercase] \starttext \section{New section} \input knuth \stoptext But I still get lowercase. Using 'textcommand=\cap' gives me small capitals, but I want full-size capitals. Is there a way to get what I want? Thanks, Richard Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail

2 1

Re: [NTG-context] Cannot run Lilypond
by Henning Hraban Ramm 04 Jun '09

04 Jun '09

Am 2009-06-03 um 16:54 schrieb Mojca Miklavec: >> pstopdf is part of the ConTeXt distribution and should give you >> something >> like: >> PsToPdf | version 2.0.1 - 2002-2006 - PRAGMA ADE/POD > Yes, but pstopdf relies on existance of ghostscript in path. pstopdf > is just a wrapper. If you don't have ghostscript installed, this is > unlikely to work. I know, but Vyatcheslav said, pstopdf would say "nothing", and that would be too less, even if GS isn't installed. > But ... I had some impression that lilypond is able to generate pdfs > on the fly? It has GS compiled in (or as a library or the like), but unfortunately it can't generate PDF snippets, only whole pages. And it generates always PostScript first (after a normal LP run you've a useless .ps file). EPS snippets (that we use here) were a special feature for the LaTeX "lilypond-book" process, that's why there were even more junk files created before v.12.2 Greetlings from Lake Constance! Hraban --- http://www.fiee.net/texnique/ http://wiki.contextgarden.net https://www.cacert.org (I'm an assurer)

2 2

Page number updates
by richard.stephens＠converteam.com 04 Jun '09

04 Jun '09

Hello again, I want to set up a header which stretches across the margins as well as the text area, so I've defined a layer for use as a background, as follows: \setuplayout[backspace=3.5cm,leftmargin=0.5cm,leftmargindistance=1.0cm] \definelayer[pagenumber][width=3cm,height=3cm] \startsetups layer \setlayer[pagenumber]{Page \pagenumber} \stopsetups \setupbackgrounds[header][leftmargin][setups=layer,background=pagenumber] \starttext \dorecurse{4}{\page[empty]} \stoptext Unfortunately, the page numbers are all '1'. If I change the line: \setupbackgrounds[header][leftmargin][setups=layer,background=pagenumber] to \setupbackgrounds[page][setups=layer,background=pagenumber] the page numbering works, so I can get what I want by adjusting the offsets of the layer. My question is: should the first one work? Regards, Richard Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail

1 0

Re: [NTG-context] usemodule[bib] upsets abbreviations
by richard.stephens＠converteam.com 04 Jun '09

04 Jun '09

> richard.stephens(a)converteam.com wrote: > > Using today's beta (2009-06-03), my abbreviations seem to be upset by the > > \usemodule[bib] command. > > Here is a simple test case in which the first line is okay, but the second > > line, with ! after the abbreviation, fails. > > > > \enableregime[il1] > > \abbreviation {KF} {Kalman filter} > > \usemodule[bib] > > Either update the bib module from http://modules.contextgarden.net > (please do), or add a \protect at this location of your input > file (ugly hack). > > Best wishes, > Taco I updated the bib module and it works. Thanks a lot. Richard Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail

1 0

Bug in spacement in mathmode mkiv
by Otared Kavian 04 Jun '09

04 Jun '09

Hi Hans, I noticed that in math mode the spacement of some symbols are incorrect while using mkiv (they are correct in mkii). Here is an example %%%%% begin example \starttext Set $a := bc^{-1}$. \stoptext %%%%% end example In this example, there should be a space before and after ":=" as one may see it readily in mkii (and indeed in plain TeX…). Best regards: OK

1 0

Re: [NTG-context] asymptote support
by Michail Vidiassov 04 Jun '09

04 Jun '09

Dear Mojca, On Tue, 2 Jun 2009, Mojca Miklavec wrote: > It will help a lot if you could post a link to some file to be > included, so that Hans has something to play with in hand. http://www.navone.org/Media/Movies/AlienSong_mp4.mov Sincerely, Michail

2 4

Table example from wiki doesn't compile with mkiv
by Nicolas Girard 03 Jun '09

03 Jun '09

Hi, the following code, coming straight from http://wiki.contextgarden.net/Table#Background_Colors , doesn't compile with mkiv. Cheers, Nicolas \setupcolors[state=start] \starttable[|l|l|] \HL \BL[1]\SR \NC Command \NC Meaning \NC\SR \HL \NC \tex{NC} \NC next column \NC\FR \NC \tex{NR} \NC next row \NC\LR \HL \CL[green]\SR \NC \tex{AR} \NC automatic row\NC\SR \HL \stoptable ! Missing \endgroup inserted. <inserted text> \endgroup <to be read again> \endtemplate <template> \endtemplate \normalTABLEmultirule #1->& \use {#1}\normalTABLElongrule & \dodocomplexTableGL ...LEmultirule {#3}}\fi \next \doPostTableGL #2 \TABLEgrayline ->\complexTableCOLOR [2,green] \SR ... l.11 \NC \tex{AR} \NC automatic row\NC\SR

1 0

Re: [NTG-context] Lily module under Win
by Vyatcheslav Yatskovsky 03 Jun '09

03 Jun '09

A-ha! pstopdf is a Ruby thing, which I don't install because I use Lua only )) Does anyone dare to rewrite the script in Lua? Or maybe there is another way to get PDF (for instance, Lily can produce pdfs directly, isn't it?) > pstopdf is part of the ConTeXt distribution and should give you > something like: > > hraban$ pstopdf > PsToPdf | version 2.0.1 - 2002-2006 - PRAGMA ADE/POD > > PsToPdf | --convert convert ps into pdf > PsToPdf | --request handles exa request file > PsToPdf | --watch watch folders for conversions (untested) > > I don't see any eps files created. Best, Vyatcheslav

1 0

Problems in latest beta
by Kevin D. Robbins 03 Jun '09

03 Jun '09

In the latest beta, I nearly have everything working for a set of documents that haven't built cleanly in MkIV since Hans started merging the new structure code. Thanks, Hans and others, for the steady progress! I've started reading the new structure code, and I have to say I find it much easier to understand. I have a few remaining problems, that I've discovered so far, that I'd appreciate any help you can give me. First, I still haven't been able to use \placelistofacronyms or \completelistofacronyms to produce a list of acronyms used in my document. Here is my test case: ===== \definesynonyms[acronym][acronyms][\infull] \setupcapitals[sc=yes] \setupsynonyms[acronym][textstyle=small,width=1.25in] \acronym{ABC}{A Better Compiler} \acronym{DEF}{Don't Ever Fail} \starttext \completelistofacronyms % \title{Acronyms}\placelistofacronyms \section{\ABC\ Section} \infull{ABC} (\ABC) \section{\DEF\ Section} \infull{DEF} (\DEF) \stoptext ===== Here is the error: ===== structure : chapter @ level 2 : 0.1 -> \headtext {acronyms} ! Undefined control sequence. \dosetsynonymattributes ...def \fontattributehash {\synonymparameterhash #1}... \@@ddsyndeftitle ...tes \c!textstyle \c!textcolor ABC \doif #1#2->\edef \!!stringa {#1 }\edef \!!stringb {#2}\ifx \!!stringa \!!str... \dododescriptioncomponent ...er \c!title }\v!none {\global \nodescriptioncap... \@@makedescription ...itle ={#2},\c!bookmark =,][] \@@dostartdescriptionindeed \dodowithpar ...tes \c!textstyle \c!textcolor ABC} #1\@@stopdescription ... l.10 \completelistofacronyms ===== Second, I use the following float definitions for wide figures and tables. The floats are placed as I expect, but neither the wide figures nor the wide tables are given numbers in the caption...I just see "Figure Foo, bar, baz" instead of "Figure 1 Foo, bar, baz". However, the other figures and tables are numbered correctly, so it looks like the counters are incremented, just not used in the captions for wide figures and tables. \definefloat[widefigure][widefigures][figure] \setupfloat[widefigure] [location=inner] \definefloat[widetable][widetables][table] \setupfloat[widetable] [location=inner] Here is a test case: ===== \definefloat[widetable][widetables][table] \setupfloat[widetable] [location=inner] \starttext \completelistoftables \page[yes] \placewidetable[here,force][tab:foo]{Bar} {\starttable [s1 |lp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth)|] \HL[5] \NC Foo \NC \Use4[c]{Bar} \AR \NC \NC Baz \NC Boo \NC Blah \NC Flub \NC \AR \HL[5] \NC Bop \NC 3 \NC 1 \NC 0 \NC 2 \NC \AR \NC Bap \NC 3 \NC 2 \NC 0.5 \NC 0.5 \NC \AR \NC Bip \NC 1 \NC 2 \NC 3 \NC 0 \NC \AR \NC Nip \NC 3 \NC 2 \NC 0.5 \NC 0.5 \NC \AR \NC Nup \NC 2 \NC 2 \NC 0 \NC 0 \NC \AR \HL[5] \stoptable} \placetable[here,force][tab:foo]{Bar} {\starttable [s1 |lp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth) |rp(.25\textwidth)|] \HL[5] \NC Foo \NC \Use4[c]{Bar} \AR \NC \NC Baz \NC Boo \NC Blah \NC Flub \NC \AR \HL[5] \NC Bop \NC 3 \NC 1 \NC 0 \NC 2 \NC \AR \NC Bap \NC 3 \NC 2 \NC 0.5 \NC 0.5 \NC \AR \NC Bip \NC 1 \NC 2 \NC 3 \NC 0 \NC \AR \NC Nip \NC 3 \NC 2 \NC 0.5 \NC 0.5 \NC \AR \NC Nup \NC 2 \NC 2 \NC 0 \NC 0 \NC \AR \HL[5] \stoptable} \stoptext ===== Third, I can't get my appendices to count in letters A, B, C, etc. Following Hans' suggestion, I read strc-def.mkiv<http://source.contextgarden.net/tex/context/base/strc-def.mkiv?search=conve…>re: conversion sets. I tried adding these lines to my document: \definestructureseparatorset [appendix] [] [.] \definestructureconversionset [appendix] [Romannumerals,Characters] [numbers] \definestructureresetset [appendix] [] [0] \setupstructureblock[appendix][sectionconversionset=appendix] \setupstructurehead[chapter][sectionconversionset=\structureblockparameter\c!sectionconversionset] But, I still see the appendices counting 1, 2, 3, etc. Where am I going wrong? I built all these examples using ConTeXt Minimals Versions: MTXrun | main context file: /opt/context/beta/tex/texmf-context/tex/context/base/context.tex MTXrun | current version: 2009.06.02 09:30 This is LuaTeX, Version beta-0.40.1-2009050920 (Web2C 7.5.7) luatex.web >= v2376 Thanks, Kevin

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Windows PDF viewer with refresh?
by John Devereux 03 Jun '09

03 Jun '09

Hi All, Sorry for the seemingly trivial question, but does anyone have any advice on the best PDF viewer to use on Windows, for use with Context? I can't even seem to find one with refresh! After years of periodic usage of Context on linux, I am now trying to configure it on a Windows system (for someone else). Any suggestions in general for setting up a decent workflow would also be very welcome. Thanks, -- John Devereux

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Tikz & contextwiki
by Nicolas Girard 03 Jun '09

03 Jun '09

Hi, is it possible to run code involving the tikz module in the wiki ? I'm asking because there's such a piece of code on the Colors page <texcode> \usemodule[tikz] \starttext \tikz\shade[ball color=red!40!yellow] (0,0) circle (.15cm); \stoptext </texcode> and I couldn't make it work on the wiki by typing: <context> \usemodule[tikz] \starttext \tikz\shade[ball color=red!40!yellow] (0,0) circle (.15cm); \stoptext </context> -- Nicolas

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usemodule[bib] upsets abbreviations
by richard.stephens＠converteam.com 03 Jun '09

03 Jun '09

Using today's beta (2009-06-03), my abbreviations seem to be upset by the \usemodule[bib] command. Here is a simple test case in which the first line is okay, but the second line, with ! after the abbreviation, fails. \enableregime[il1] \abbreviation {KF} {Kalman filter} \usemodule[bib] \starttext Once upon a time, Rudolph Kalman invented the \KF. Once upon a time, Rudolph Kalman invented the \KF! \stoptext Best regards, Richard P.S. If I don't put the \enableregime in I get a failure of the bib module, not sure why. Converteam UK Ltd. Registration Number: 5571739 and Converteam Ltd. Registration Number: 2416188 Registered in England and Wales. Registered office: Boughton Road, Rugby, Warwickshire, CV21 1BU. CONFIDENTIALITY : This e-mail and any attachments are confidential and may be privileged. If you are not a named recipient, please notify the sender immediately and do not disclose the contents to another person, use it for any purpose or store or copy the information in any medium. Please consider the environment before printing this e-mail

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