English

Cohomology groups with compact support for flat line bundles on certain complex Lie groups

Complex Variables 2024-12-24 v2

Abstract

Let XX be a complex surface obtained as the quotient of the complex Euclidean space C2\mathbb{C}^2 by a discrete subgroup of rank 33. We investigate the cohomology group H01(X,E)H_0^1(X, E) with compact support for a unitary flat line bundle EE over XX. We show the vanishing of H01(X,E)H_0^1(X, E) for a certain class of such pairs (X,E)(X, E), which includes infinitely many examples such that H1(X,E)H^1(X, E) is non-Hausdorff and infinite dimensional.

Keywords

Cite

@article{arxiv.2402.10068,
  title  = {Cohomology groups with compact support for flat line bundles on certain complex Lie groups},
  author = {Takayuki Koike and Jinichiro Tanaka},
  journal= {arXiv preprint arXiv:2402.10068},
  year   = {2024}
}

Comments

17 pages

R2 v1 2026-06-28T14:49:46.332Z