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I am making an A0 poster using the lmodern package, which has a strange influence on formula formatting.

Removing this package makes everything work well, but I would like to know what I have done wrong.

With lmodern package :

enter image description here

Without lmodern package :

enter image description here

Here is the corresponding code.

\documentclass[landscape,30pt]{sciposter}
\usepackage{amsmath,amssymb,amsrefs}
\usepackage[english]{babel}
\usepackage{lmodern}


\begin{document}

$$\int_0^\infty \sqrt{\frac{f(t)}{g(t)}}dt$$

\end{document} 
  • The \int sign does not have a bigger version. If you use some other package for math fonts, like euler or mathpazo for example, it works. Interesting. – Sigur Jun 24 '13 at 17:15
  • The clash seem to happen between sciposter and lmodern. Also, note that your example isn't minimal: babel and the ams packages are not required to reproduce the bug. Similarly, the options you provide for sciposter can and should be omitted too. – Xavier Jun 24 '13 at 17:18
  • 3
    \usepackage{exscale} after \usepackage{lmodern} should fix it. See Compatibility between amsmath and exscale – egreg Jun 24 '13 at 17:20
  • you can also do \usepackage[nomath]{lmodern}. – user4686 Jun 24 '13 at 21:55
  • On the basis of egreg's comment, the problem is a dupe – Joseph Wright Aug 20 '13 at 6:23

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