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I want to write the power set of a set S as 2^S. But the 2 should be kind of calligraphic. I tried cal and mathcal but they do not work with numbers. Has anybody an idea?

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Could you provide a visual example of what you're trying to accomplish? "Kind of calligraphic" is a pretty vague description... – Tomas Lycken Sep 17 '12 at 11:09
Just not a regular 2. And not just italic. – Jana Sep 17 '12 at 11:28
up vote 27 down vote accepted

Fonts "Zapf Chancery" or its successor "TeX Gyre Chorus" also contain some kind of "calligraphic" digits:


  % family qzc: Font TeX Gyre Chorus (package tgchorus)
  % family pzc: Font Zapf Chancery (package chancery)
  $\mathcal{P}(S) = \textcal{2}^S \qquad
  \text{with }\textcal{2} = \{0,1\}$

Result with TeX Gyre Chorus

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Minor nit pick, but I think should be S = {0,1}. – Peter Grill Feb 20 '13 at 1:54
@PeterGrill S can be any set. Consider {0,1} as kind of selector that is applied on each element in S. Going through all combinations gets all subsets of S and as result the power set. – Heiko Oberdiek Feb 20 '13 at 9:10

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