Tuesday November 17th, 15:00, CRM Small Room
Speaker: Yago Antolin (UAB)
Title: Geodesics in virtually free groups
Abstract: I will survey the following result of Gilman, Hermiller, Holt and Rees. A finitely generable group G is virtually free if and only if there exists a generating set X of G and a finite set of words S such that a word in X is geodesic if and only if it do not contain, as a subword, any element of S.
