Skip to main content

New answers tagged

3 votes

Finite normal subgroup of mapping class group

When the genus of the surface is at least 3, Lanier-Margalit proved something much stronger than the fact that there are no finite normal subgroups: aside from the hyperelliptic involution, the normal ...
Andy Putman's user avatar
  • 44.1k
10 votes
Accepted

Finite normal subgroup of mapping class group

I found the following two assertions in Maher and Tiozzo's article Random walks, WPD actions, and the Cremona group. They refer to Ivanov's monograph Subgroups of Teichm├╝ller modular groups. (I don't ...
AGenevois's user avatar
  • 7,961

Top 50 recent answers are included