For sure it's a really silly question, but I can't find a solution: how can I change the font of just the formulas in a TeXLive document?
I want a style where the "f" (for "function") is elegant, slim, tall, a bit oblicuous and with serifs, similar to a little integral sign, and the "a" is nearly a circle, like this one:
Instead, I get a really awful style, with an "f" too litle and fat.

Does somebody know the name of the font and how can I change it?
All the best and thanks a lot!!
!in front of it to turn it into a link. A moderator or another user with edit privileges can then reinsert the!to turn it into an image again. – Qrrbrbirlbel Jun 25 '13 at 17:43\documentclassto\end{document}that exhibits the problem would be very useful. – egreg Jun 25 '13 at 17:54beamerdocument. – egreg Jun 25 '13 at 18:12