First Author: Rafael Villarroel-Flores
Address:
Instituto de Matematicas,
UNAM,
Circuito Exterior,
Ciudad Universitaria,
Mexico, D.F.,
Mexico

Second Author: Peter Wehh
Address:
School of Mathematics,
University of Minnesota,
Minneapolis MN 55455
USA

Title:
Some split exact sequences in the cohomology of groups

Abstract:
We analyze the split exact sequences of (co)homology groups associated to
the spaces of Dwyer which give rise to the centralizer decomposition and
subgroup decomposition of the classifying space BG of a finite group.
In the first instance these sequences have infinite length. We show that they
give rise to finite sequences which are also split and exact. The sequences
arise as the first page of a spectral sequence.

Preprint: January, 2000.