0
votes
1answer
51 views

Can't use \left. … \right| in a custom environment

I'm writing a Hebrew (RTL) document with equations and I compile it with xelatex. The equation numbers are wrong and I have found that placing \LTR tag before the equation fix this. I have created an ...
2
votes
2answers
196 views

Create environment out of eqnarray with frame box

Could you help me to create an environment out of this code: \smallskip\centering\framebox[0.9\textwidth]{ \begin{minipage}[c]{0.8\textwidth} \begin{eqnarray} I & = & ...
5
votes
2answers
132 views

Multiple split equations

I find myself again and again using a combination of the gather and aligned environments. So it would be nice to not have to write so much. In particular, it is often only clear after writing the ...
1
vote
2answers
165 views

Enumeration of equations in the double dollar math mode

How introduce enumeration of equations in the double dollar math mode (i.e. $$...$$)? Or even better, is it possible to make $$...$$ as a particular math environment, e.g. equation or align?
6
votes
2answers
147 views

Nested Environ's give “! Argument of … has an extra }” error

I tried using two Environ's in a nested fashion, but I get the ! Argument of \marray has an extra } error. Any idea why this happens? \documentclass{minimal} \usepackage{amsmath,environ} ...
5
votes
1answer
316 views

Equations in fancy boxes

I've checked the post here, where the package empheq is used for embedding equations into coloured boxes. With that idea, I wrote in my file the following: % in the preambule \usepackage{empheq} ...
4
votes
1answer
180 views

Numbering sequent proofs like equations

I am trying to reproduce some very old articles for use in an anthology. Some of these articles present certain rules of inference as proofs in sequent calculus, but number them along with equations, ...
11
votes
3answers
3k views

Curly brace behind equations

I have the following question: I like to have a big curly brace behind the equations to show that they belong together and have only one equation number. An example without the brace would be ...
2
votes
1answer
392 views

Redefining the amsmath equation* environment

For the background to this, see my previous question I've been trying to make changes in my LaTeX document so that math displays in black and text in red. Thanks to Stefan Kottwitz and Torbjørn T. ...
4
votes
2answers
276 views

Making \[ and \] behave as \begin{gather*} and \end{gather*}

I'm trying to redefine \[ and \] so that they behave as \begin{gather*} and end{gather*}. I've been doing this using \DeclareRobustCommmand; however, when I try to compile the following minimal ...
10
votes
2answers
1k views

Displaystyle fractions in a system of equations

I'm trying to define an environment to use with equations' systems. So far, the best solution was \newenironment{eqsys}{\begin{equation}\begin{cases}}{\end{cases}\end{equation}} but I noticed that ...
4
votes
3answers
786 views

Have verbatim code as an equation

I have a little snippet of program code / input that needs to be rendered with the exact layout as typed in (verbatim). Is it possible to have this as an equation? I tried to nest the Verbatim ...
3
votes
1answer
148 views

Code inside an equation environment is executed 4 times (or isn't it?).

I created a small example: \documentclass[a4paper,12pt]{article} \usepackage{amsmath} \usepackage[pdfstartview=FitH]{hyperref} \usepackage{bookmark} \begin{document} one line \newcounter{test} ...
14
votes
9answers
723 views

Looking for a more appropriate version of \cases

Often-times I find myself wanting to write something like, That is, a vertical brace followed by a table consisting of three columns, the first and the last are math, aligned where-ever I like, and ...
5
votes
2answers
708 views

Equation environment definition

Where is the full definition of the equation environment? I cannot find it in the .cls files. Is this in latex.ltx? Or something?
15
votes
4answers
4k views

Making a new environment combining equation and split

I'm trying to define a new environment that consists of a split environment inside an equation environment. But I'm getting an error. Here's what I'm doing: \documentclass[a4paper,12pt]{article} ...