![](https://secure.gravatar.com/avatar/36a71113d1e75ef5f4791ee863eaa330.jpg?s=120&d=mm&r=g)
Hello, I want to get underbraces under matrices in a math alignment environment. I’ve reproduced my problem here: \definemathmatrix [pmatrix] [left={\left(\,},right={\,\right)}] \starttext \placeformula[-]\startformula\startmathalignment \NC\ A \NC=\underbrace{ \startpmatrix \NC 5\NC 5\NR \NC -1\NC 7\NR \stoppmatrix}\NR \NC\NC=\underbrace{ \startpmatrix \NC 2\NC 1\NR \NC 4\NC 2\NR \stoppmatrix}\NR \stopmathalignment\stopformula \stoptext How can I achieve this? Jethro
![](https://secure.gravatar.com/avatar/3d131c6a351a6b0092c19b389bd99cf0.jpg?s=120&d=mm&r=g)
On Fri, Aug 5, 2022 at 2:01 AM Jethro Djan via ntg-context
Hello,
I want to get underbraces under matrices in a math alignment environment. I’ve reproduced my problem here:
\definemathmatrix [pmatrix] [left={\left(\,},right={\,\right)}]
\starttext \placeformula[-]\startformula\startmathalignment \NC\ A \NC=\underbrace{ \startpmatrix \NC 5\NC 5\NR \NC -1\NC 7\NR \stoppmatrix}\NR \NC\NC=\underbrace{ \startpmatrix \NC 2\NC 1\NR \NC 4\NC 2\NR \stoppmatrix}\NR \stopmathalignment\stopformula \stoptext
How can I achieve this?
Jethro
Hi Jethro, Temporary workaround: use the simplecommand. \definemathmatrix[pmatrix][matrix:parentheses][ simplecommand=pmatrix, ] \starttext % \placeformula[-] \startformula \startalign \NC A \NC = \underbrace{\pmatrix{5,5;-1,7}}_{B} \NR \NC\NC = \underbrace{\pmatrix{2,1;4,2}}_{C} \NR \stopalign \stopformula % \placeformula[-] \startformula A \alignhere= \underbrace{\pmatrix{5,5;-1,7}}_{B} \breakhere = \underbrace{\pmatrix{2,1;4,2}}_{C} \stopformula \stoptext But the code you were using should in principle also work. /Mikael
![](https://secure.gravatar.com/avatar/36a71113d1e75ef5f4791ee863eaa330.jpg?s=120&d=mm&r=g)
Hello Mikael, Thanks for your solution; it works just fine. I am not familiar with how you defined the pmatrix. Any links to manuals to learn such definitions? Also, this is the second thing I have tried to adapt from typesetting mathematics in plain TeX that didn’t work. I tried to draw commutative diagrams some time back using \diagram{…} which didn’t work(Got the idea from the book “A beginner’s book of TeX” pg. 161 by Seroul et al ). I guess what I am asking is that, what are the limits of what I can use out-of-the-box from Tex when typesetting mathematics? I have read Aditya’s ConTeXt-LaTeX tutorial which is fantastic. But the stuff illustrated there are quite limited. Are there any materials I can read on this? Thanks for your help. Jethro
On 5 Aug 2022, at 5:03 AM, Mikael Sundqvist via ntg-context
wrote: \definemathmatrix[pmatrix][matrix:parentheses][ simplecommand=pmatrix, ]
![](https://secure.gravatar.com/avatar/ed6f43113e3f1cee031ebd13654fc703.jpg?s=120&d=mm&r=g)
Hello Mikael,
Thanks for your solution; it works just fine. I am not familiar with how you defined the pmatrix. Any links to manuals to learn such definitions? Also, this is the second thing I have tried to adapt from typesetting mathematics in plain TeX that didn’t work. I tried to draw commutative diagrams some time back using \diagram{…} which didn’t work(Got the idea from the book “A beginner’s book of TeX” pg. 161 by Seroul et al ).
I guess what I am asking is that, what are the limits of what I can use out-of-the-box from Tex when typesetting mathematics? I have read Aditya’s ConTeXt-LaTeX tutorial which is fantastic. But the stuff illustrated there are quite limited. Are there any materials I can read on this?
On 8/5/2022 5:12 PM, Jethro Djan via ntg-context wrote: there is an extensive manual coming but you need to give us some time (as it goes hand-in-hand with updating / extending some of the math machinery) if you have specific wishes, just let is know and we'll have a look if it can somehow fit in Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
![](https://secure.gravatar.com/avatar/36a71113d1e75ef5f4791ee863eaa330.jpg?s=120&d=mm&r=g)
Hi, I will wait for the manual. With drawing commutative diagrams, I am sure learning how to use MetaFun/MetaPost better might help. Thanks for the fantastic work. Jethro
On 5 Aug 2022, at 3:27 PM, Hans Hagen via ntg-context
wrote: Hello Mikael, Thanks for your solution; it works just fine. I am not familiar with how you defined the pmatrix. Any links to manuals to learn such definitions? Also, this is the second thing I have tried to adapt from typesetting mathematics in plain TeX that didn’t work. I tried to draw commutative diagrams some time back using \diagram{…} which didn’t work(Got the idea from the book “A beginner’s book of TeX” pg. 161 by Seroul et al ). I guess what I am asking is that, what are the limits of what I can use out-of-the-box from Tex when typesetting mathematics? I have read Aditya’s ConTeXt-LaTeX tutorial which is fantastic. But the stuff illustrated there are quite limited. Are there any materials I can read on this?
On 8/5/2022 5:12 PM, Jethro Djan via ntg-context wrote: there is an extensive manual coming but you need to give us some time (as it goes hand-in-hand with updating / extending some of the math machinery)
if you have specific wishes, just let is know and we'll have a look if it can somehow fit in
Hans
----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context webpage : https://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : https://contextgarden.net ___________________________________________________________________________________
participants (3)
-
Hans Hagen
-
Jethro Djan
-
Mikael Sundqvist