London Algebra Colloquium abstract

Constructing non-hereditarily conjugacy separable groups

Ashot Minasyan (Southampton), 3rd February 2011

Abstract

A group G is called conjugacy separable if for any two non-conjugate elements x, y in G, there is a homomorphism f from G to a finite group Q such that f(x) is not conjugate to f(y) in Q.

G is said to be hereditarily conjugacy separable if every finite index subgroup K of G is conjugacy separable. During this talk we will discuss the main properties/applications of (hereditarily) conjugacy separable groups. Afterwards we will present a construction allowing to produce examples of conjugacy separable groups which are not hereditarily conjugacy separable.