Hello, This is a latex issue (not lyx)! Sorry.
The following example generated a compilation error: Too many math alphabets used in version normal It looks like that the 3 packages: fourier,bm,upgreek create conflicts! Any idea? \documentclass[]{beamer} %\usepackage{bm} %\usepackage{fourier} %\usepackage{upgreek} \usepackage{fourier,bm,upgreek} \begin{document} \begin{frame}[plain]{} TEST $\mathbf A_2$ $\rm A_2$ \end{frame} \end{document} =========================================================================== Patrick DUPRÉ | | email: pdu...@gmx.com Laboratoire de Physico-Chimie de l'Atmosphère | | Université du Littoral-Côte d'Opale | | Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44 189A, avenue Maurice Schumann | | 59140 Dunkerque, France ===========================================================================