Buildings, group extensions and the cohomology of congruence subgroups
Group Theory
2016-09-07 v1 Algebraic Topology
Abstract
We use buildings and group extensions to compute lower bounds on the top Betti numbers for the cohomology of the level p congruence subgroups of SL(3,Z) and Sp(4,Z).
Cite
@article{arxiv.math/9702234,
title = {Buildings, group extensions and the cohomology of congruence subgroups},
author = {Alejandro Adem},
journal= {arXiv preprint arXiv:math/9702234},
year = {2016}
}