Symbol for kernel of restriction map in Galois cohomology

Question

I don't know how to typeset first symbol in the following line

I thought it could be some variation on \coprod or \amalgam, but I could not find it.

If you have the PDF you can check exactly what font and character that is, but it looks like a cyrillic Sh to me rather than a character from a math font (but I can't read Cyrillic so I could be mistaken:-) — David Carlisle, Feb 04 '22 at 11:47
I guess it is as https://wstein.org/edu/2010/582e/refs/tate-galois_cohomology.pdf uses this symbol for the Shafarevich group — David Carlisle, Feb 04 '22 at 11:54

score 1 · Accepted Answer · answered Feb 04 '22 at 13:02

1

This is a Cyrillic Sh, probably for Shafarevich

answered Feb 04 '22 at 13:02

David Carlisle

1 Answers1