Graphics, Figures & Tables ⇒ fourier vs lmodern : 'plus' sign doesn't show in tikz

[thomasb]

A minimal example where the '+' appears :

Code: Select all

\documentclass{article} 
\usepackage{tikz}
\usepackage{lmodern}
\usepackage{fourier}
\begin{document}
\begin{tikzpicture}
  \draw (0,0) node {$a+b$};
\end{tikzpicture}
\end{document}

Now, the '+' doesn't appear :

Code: Select all

\documentclass{article} 
\usepackage{tikz}
\usepackage{fourier}
\usepackage{lmodern}
\begin{document}
\begin{tikzpicture}
  \draw (0,0) node {$a+b$};
\end{tikzpicture}
\end{document}

[user22741]

What is the purpose of overwriting one font with another? Use only the one font you want to use.

[thomasb]

As far as I understood, lmodern is for text and fourier is for equations