Artemio González López <[email protected]> writes: > Thank you very much for your tip!
Sure, you're welcome. Please keep [email protected] in CC and use Reply-To-All in your MUA, otherwise your messages won't be visible on the list. Thanks. > But what about this example: > > \documentclass[a4paper,11pt]{article} > > \usepackage{babel} > \usepackage{amsmath} > > \begin{document} > > \[ > \begin{vmatrix} > \hfill\frac1{3}-\lambda& -\frac14\\[2pt] > -\frac14& \hfill\frac1{3}-\lambda > \end{vmatrix} > =\bigg(\frac13-\lambda\bigg)^2-\frac1{16}=0\iff > \frac13-\lambda=\pm\frac14\iff\lambda= > \begin{cases} > \frac13-\frac14=\frac1{12}\\[3pt] > \frac13+\frac14=\frac7{12}\,. > \end{cases} > \] > > > \end{document} Which version of AUCTeX are you using? That reminds me of a shortcoming which was fixed last April with commit fa547aa71e[1]. Can you please update your AUCTeX installation and try it again? Your example indents fine for me if I paste it into a .tex file, mark it and hit 'M-x indent-region RET'. Best, Arash Footnotes: [1] http://git.savannah.gnu.org/cgit/auctex.git/commit/?id=fa547aa71e9376b19630a5e0db017dc619451b75
