Tuesday, October 20th, 15:30, CRM Small Room
Speaker: Olivier Siegenthaler (ETH Zurich)
Title: The Twisted Twin of the Grigorchuk Group
Tuesday
Seminar October 13th
Tuesday, October 13th, 15:30, CRM Small Room
Speaker: Enric Ventura (UPC)
Title: Computing fixed closures in free groups
Abstract: Let F be a finitely generated free group. We present an algorithm such that, given a subgroup H in F, decides whether H is the fixed subgroup of some family of automorphisms, or family of endomorphisms of F and, in the affirmative case, finds such a family. The algorithm combines both combinatorial and geometric methods.
Speaker: Enric Ventura (UPC)
Title: Computing fixed closures in free groups
Abstract: Let F be a finitely generated free group. We present an algorithm such that, given a subgroup H in F, decides whether H is the fixed subgroup of some family of automorphisms, or family of endomorphisms of F and, in the affirmative case, finds such a family. The algorithm combines both combinatorial and geometric methods.
Seminar September 22nd
Welcome to the Barcelona Group Theory Seminar for the year 2009-10. Official meeting time this semester is Tuesdays at 15:30.
Tuesday, September 22nd, 15:30, CRM Small Room
Speaker: Warren Dicks (UAB)
Title: On Leighton's graph covering theorem
Tuesday, September 22nd, 15:30, CRM Small Room
Speaker: Warren Dicks (UAB)
Title: On Leighton's graph covering theorem
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