# Geometry/Topology Seminar

**Thursdays** at **3:00PM**, in
308 Eckhart.

## Spring 2002

March 28,
**Jeff Brock**, U. Chicago

*Cone-manifolds and Ahlfors' measure conjecture.
*

April 4
** Heather Johnston**, Vassar College

*Bounded surgery, coarse borel and non-uniformly
contractible spaces.*

April 11, 2:00-3:00, E202 (special time and place)
** Diarmuid Crowley **, MPI Bonn

* Quadratic Z-modules, Kreck monoids and the classification of highly
connected manifolds.*

April 11, 3:00-4:00, E308
** Eugenie Hunsicker**, Lawrence University

* An L² Hodge Theorem for manifolds with fibred boundaries.
*

April 18
** Paul Kirk**, Indiana

*The Atiyah-Patodi-Singer rho invariant and splittings of manifolds.*

April 25, 3:00-4:00, E308
** Chris Connell**, U. of Chicago

* Equivariant retracts and decompositions of hyperbolic manifolds.*

April 29, 2:30-3:30PM in Eckhart 206 (Special time and place).
** Ashley Reiter Ahlin**, U. of Chicago

* The large scale geometry of nilpotent-by-cyclic groups.
*

May 16
**Tadeusz Januskiewicz**, Binghamton/Wroclow

*On hyperbolic coxeter groups.
*

May 23
** Regina Rotman**, Courant

*Estimates for the length of a shortest closed geodesic.*

June 4, 2:00-3:00, E308
** Dave Witte**, Oklahoma State University

* Some ideas in the proof of Ratner's Theorem*

June 6, 2:00-3:00, E308
** John McCarthy**, Michigan State University

*On the first cohomology
group of cofinite subgroups in surface mapping class groups.*

June 6, 3:00-4:00, E308
** Bill Vautaw**, Michigan State University

*Automorphisms of the Torelli
group in genus 3.*

June 11, 3:00-4:00 E308 (special time)
** Nikolai Ivanov**, Michigan State University

* Comlexes of curves and mapping class groups*

For questions, contact