[Binghamton Geometry/Topology Seminar] February 17

[Lucas Sabalka]

                  BINGHAMTON GEOMETRY/TOPOLOGY SEMINAR

Date:  Thursday, February 17, 2010
Time:  2:50-3:50pm
Place:  Library North 2205 followed by coffee/tea in the Anderson
         Reading Room.

Speaker:  Tim Riley
Title:  The Dehn function of Baumslag's metabelian group

Abstract:  Baumslag's group is a finitely presented metabelian group with a
Z-wreath-Z subgroup. There is an analogue with an additional torsion
relation in which this subgroup becomes (finite cyclic)-wreath-Z. We will
explore these groups and prove that Baumslag's group has an exponential Dehn
function. This contrasts with the torsion analogues which have quadratic
Dehn functions. This is work with Martin Kassabov.
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