How to break long equations with LyX
Paul A. Rubin
parubin73 at gmail.com
Fri Jun 19 15:15:16 UTC 2020
On 6/19/20 7:51 AM, list_email at icloud.com wrote:
> I have tried mightily to get LyX to break long equations. I’ve studied multiple pages at stackexchange, both LaTeX and LyX, and can’t seem to get anything to work.
>
> I have had luck in the past with the second large block of code at this page:
>
> https://stackoverflow.com/questions/2904807/lyx-breaking-long-formula-lines
>
> but today I have some problems with it.
>
> First, it doesn’t work if the \text command appears inside my own LaTeX code that appears between \begin{dmath} and \end{dmath} or if I try to use the trick twice in the same document. (That’s a tentative analysis of the problem.) Specifically, LyX runs at 100% CPU eventually gives me a chance to abort and then follows up with this additional message: "The external program pdflatex finished with an error. It is recommended you fix the cause of the external program's error (check the logs)."
>
> Plus, I now want to to apply the line breaking to a line within an aligned environment (Insert -> Math -> Aligned Environment in the menu system.) This is causing things to look even worse, even though I added two “aligned” lines to the referenced code block. (If you look at the code you’ll see the obvious places to add the lines.)
>
> How do LyX-ers handle this? Is there “LyX” solution to breaking long equations? I’m OK with some ad hoc solution for now, or some ERT if it works.
>
> Thanks,
> Jerry
>
>
I've never used the breqn package, but with ordinary and AMS math
environments, hitting Ctrl-Enter in the middle of a long formula will
break it (inserting a line break, \\, in the LaTeX output). If that
doesn't achieve what you want, perhaps you could post a minimal example
and a specification of what the output should look like.
Paul
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