Very simple question that I can't seem to find an answer to; I'm writing a paper and I would like to use a script with a 'curly-tailed' capital S as is classically seen with the successor function in set theory, and I can't find one -- are there any?
Any text package recommendations would be greatly appreciated.
EDIT: here's a sketch of what I'm looking for. I use capital letters for classes and fancier symbols for unary operations in general, which is why I'm looking for this particular script.

$\mathcal{S}$? – TeXnician Mar 28 '17 at 06:42$\mathscr{E}$has the 'curly tailed' property I'd like on S. – Alec Rhea Mar 28 '17 at 06:48euscriptare probably closest to this. – Andrew Swann Mar 28 '17 at 07:09