MODNET
Research Training Network in Model Theory
Publications > Preprint server > Preprint Number 102

Preprint Number 102

Previous Next Preprint server


102. Alessandro Berarducci
Cohomology of groups in o-minimal structures: acyclicity of the infinitesimal subgroup
E-mail:

Submission date: 15 November 2007.

Abstract:

By recent work on some conjectures of Pillay, each definably compact group in a saturated o-minimal structure is an expansion of a compact Lie group by a torsion free normal divisible subgroup, called its infinitesimal subgroup. We show that the infinitesimal subgroup is cohomologically acyclic. This implies that the functorial correspondence between definably compact groups and Lie groups preserves the cohomology.

Mathematics Subject Classification: 03C64, 22E15, 03H05

Keywords and phrases: Cohomology, groups, o-minimality

Full text arXiv: pdf, ps.


Last updated: November 19 2007 19:51 Please send your corrections to: