Complete groups are complete co-analytic
Simon Thomas: Rutgers University
Location: Hill 705
Date & time: Monday, 06 March 2017 at 5:00PM - 5:11PM
A group G is said to be complete if G is centerless and every automorphism of G is inner. In this talk, answering a question of Kechris, I will show that the set of countably infinite complete groups is complete co-analytic in the Polish space of countably infinite groups.