# How to get default math font globally

This is the font in math mode in my whole document.

It doesn't even recall the default font (math fonts table). It looks more like \mathcal{}, which I used once, didn't like, and quickly removed.

How can I revert math font to default in whole document?

-
How about you create a small, minimal working example (MWE) and add \listfiles to your preamble, and post the output after **File list** in your .log as part of your post in the form of an edit. This way we can see what files (and/or fonts) might be loaded that causes this "problem". – Werner Jul 24 '13 at 17:12
@Werner it really is good way of dealing with such problems! Good to know. Hacking it down I got to know that \usepackage{euler} changed all my math fonts. I can't use \mathscr{} now though... Do you know how to deal with this? – alex Jul 24 '13 at 17:26
Using euler for just \mathscr is quite a drastic measure. Do you need only the calligraphic Euler letters? – egreg Jul 24 '13 at 17:32
@egreg I need it for just a few letters. euler being truly an overkill I managed to quickly find amssymb which is just more than enough for me. @Werner post an answer about MWE and I will gladly accept it. – alex Jul 24 '13 at 17:37
amssymb has nothing to do with calligraphic letters. Do you mean \usepackage[mathscr]{eucal}, instead? – egreg Jul 24 '13 at 17:45

Using the euler package is discouraged as the package is obsolete and eulervm should be used.

However, this package changes all math symbols using the Euler fonts. If you only need the calligraphic letters from Euler, there is eucal:

\documentclass{article}

\usepackage[mathscr]{eucal}

\begin{document}
Euler calligraphic: $\mathscr{ABCDEF}$

CM calligraphic: $\mathcal{ABCDEF}$
\end{document}


With the mathscr option, Euler calligraphic is available with \mathscr and \mathcal continues to use the Computer Modern calligraphic letters.

-