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The mod 2 cohomology rings of congruence subgroups in the Bianchi groups

Abstract : We provide new tools for the calculation of the torsion in the cohomology of congruence subgroups in the Bianchi groups : An algorithm for finding particularly useful fundamental domains, and an analysis of the equivariant spectral sequence combined with torsion subcomplex reduction. __________ With an appendix by Bui Anh Tuan and Sebastian Schönnenbeck
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https://hal.archives-ouvertes.fr/hal-01565065
Contributor : Alexander Rahm Connect in order to contact the contributor
Submitted on : Saturday, October 12, 2019 - 6:09:59 AM
Last modification on : Wednesday, November 23, 2022 - 10:16:08 AM

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Ethan Berkove, Grant S Lakeland, Alexander D. Rahm, Anh Tuan Bui, Sebastian Schönnenbeck. The mod 2 cohomology rings of congruence subgroups in the Bianchi groups. Journal of Algebraic Combinatorics, 2019, ⟨10.1007/s10801-019-00912-8⟩. ⟨hal-01565065v3⟩

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