Algebra/Topology seminar

Speaker: Conchita Martinez-Perez (University of Zaragoza)

Title: On the proper geometric dimension of lattices in classical Lie groups

Abstract: The proper geometric dimension of a group is the smallest possible dimension of a model of the classifying space for proper actions. We use algebraic techniques to show that for lattices in a classical Lie group not equal to SO(4,C) or SP(4,R) the proper geometric dimension coincides with the virtual cohomological dimension. This is a joint work with Javier Aramayona, Juan Souto and Dieter Degrijse.