What is this symbol, pictured below, which is used to denote sample space in probability theory, according to one textbook (UK's A-Level in Statistics from Edexcel).

And how to typeset it in Latex?

enter image description here

  • 1
    Calligraphic or script captial E. Would \mathcal{E} from package amssymb or \mathscr{E} from mathrsfs do the trick? – yo' Jun 5 '18 at 14:28

I think \usepackage[cal=boondoxo]{mathalfa} and \mathcal{E} might come closest to the symbol you are after. This font is freely available.

enter image description here

\[ \mathcal{E} \]

However, there is a font mathpi which is a commercial font (see the mathalfa documentation for more information). This I believe is exactly the same font as in your picture.

enter image description here

(from page 7 of the mathalfa documentation)

| improve this answer | |
  • OK, but how do we say it? It isn't a greek letter, so do we just say "E" when we pronounce it? I want to be pedantic and find out what this "E" is. Wikipedia's article for sample space gives three possible symbols (S, Omega and U), of which this "E" is none. – Mihael Jun 5 '18 at 14:42
  • 3
    @Mihael Call it "E" if possible, or "script E" if necessary. – Steven B. Segletes Jun 5 '18 at 14:43
  • 1
    Looking at the mathalfa documentation (texdoc mathalfa, page 7) I'd say that the mathpi font contains the sought form. – campa Jun 5 '18 at 14:46
  • 2
    ... though, I forgot, the mathpi fonts are commercial. – campa Jun 5 '18 at 14:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

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