Re: [NTG-context] Problem with \leqalignno

Hi Mingranina, For displayed aligned formulas it is better to use \startalign…\stopalign, instead of the plain TeX construction \leqalignno. Please have a look at the following: Best regards: OK %%% begin align-equations.tex \starttext \placeformula \startformula \startalign \NC c^2 \NC= a^2 + b^2 \NR[+] \NC a^2 + b^2 \NC = c^2 \NR[+] \NC d^2 \NC = e^2 \NR[+] \stopalign \stopformula \startsubformulas[eq:Rel] \placeformula \startformula \startalign \NC c^2 \NC= a^2 + b^2 \NR[eq:a] \NC a^2 + b^2 \NC = c^2 \NR[eq:b] \NC d^2 \NC = e^2 \NR[eq:c] \stopalign \stopformula \stopsubformulas The relations (\in[eq:Rel]) are divided into three parts, but (\in[eq:c]) is obvious. \stoptext %%% end align-equations.tex

On 11 Sep 2016, at 03:00, Mingranina Gingranina wrote:

Hello All,

I am trying to compile the following example (from http://wiki.contextgarden.net/Math/Display) with context:

\starttext

\placeformula \startformula \leqalignno{c^2 &= a^2 + b^2 &\formulanumber{a} \cr a^2 + b^2 &= c^2 &\subformulanumber{b} \cr d^2 &= e^2 &\formulanumber\cr} \stopformula

\stoptext

but I get the following error message: {{{ . . . tex error > tex error on line 7 in file /home/user/math-example.tex: ! Undefined control sequence

<argument> ...er {a} \cr a^2 + b^2 &= c^2 &\subformulanumber {b} \cr d^2 &= e^2 &\formu... \math_both_eqalign_no_normal ...ratchtoks \crcr #2 \crcr \egroup \math_finish... l.7 d^2 &= e^2 &\formulanumber\cr}

1 \starttext 2 3 \placeformula 4 \startformula 5 \leqalignno{c^2 &= a^2 + b^2 &\formulanumber{a} \cr 6 a^2 + b^2 &= c^2 &\subformulanumber{b} \cr 7 >> d^2 &= e^2 &\formulanumber\cr} 8 \stopformula 9 10 \stoptext 11

? }}}

Am I doing something wrong? Any help would be gratefully appreciated.

Thanks Mingranina

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