TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I've seen bigints for big integral symbols, but I'd like to make a large \mathcal{F} for a Fourier transform. Is there a good way to do this?

share|improve this question
Look at the \mathlarger command of the relsize package. – egreg May 7 '12 at 13:12
up vote 5 down vote accepted

You may use \scaleboxfrom the graphicx package:


\bigF (\omega)=\int f(x)e^{i t x}dt
share|improve this answer
Do not use \ensuremath in such situations. There is no need to use it here since \scalebox puts its contents in the text mode, so a better way here would be \newcommand{\bigF}{\scalebox{1.5}{$\mathcal{F}$}}. And even then, the symbol should be scalable, with different size of the letter F, so the use of the \mathchoice command would help here a lot. – yo' May 7 '12 at 21:07
@tohecz You are right. I had a typo and believed it were due to the definition, but it was in the example, so I got an error message. – Peter Breitfeld May 7 '12 at 22:47

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.