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In .tex documents, when I am displaying an equation I do this:

\begin{equation}
a^2+b^2=c^2
\end{equation}

And it displays with an equation number off to the right.

But when displaying proofs (where lots of work / equations / formulations may be present in a group), is there a standard convention for how these are to be displayed? Would an entire group be stashed between equation tags (and therefore assigned an equation number, cumulatively), or is there a way to display mathematical work without any particular assignment?

Sean Hill
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    Starred versions of many math-enviroments produces equateions with no tag , and you can then assign a custom tag with \tag{<text>} – Runar Dec 27 '15 at 19:09
  • Instead of \begin{equation}...\end{equation}, use \[...\] or \begin{equation*}...\end{equation*} if you've loaded amsmath. – Werner Dec 27 '15 at 19:09
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    See http://tex.stackexchange.com/questions/98397/enumerate-formulas/98401#98401 – Ethan Bolker Dec 27 '15 at 19:14
  • For standard conventions on writing math, I really have no idea, but would be very interested in knowing. My guess is that it varies between institutions and locales, but maybe there is a ISO-standard on it, which I in principle believe would be the best one to follow.

    I am sure there will be a great answer to this soon.

     – Runar Dec 27 '15 at 19:27
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    Welcome to TeX.SX! I'm afraid this is not a TeXnical question, but rather a stylistic problem. We can discuss how to implement a convention, not what convention you should follow. – egreg Dec 27 '15 at 19:32
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    There are several conventions in mathematics; some people number each displayed formula, other just those they make reference to; in other fields numbering is rare and just some displayed formulas are tagged for reference. – egreg Dec 27 '15 at 20:26

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