English

Homotopy and Homology at Infinity and at the Boundary

Algebraic Topology 2021-11-02 v1

Abstract

In this paper we study the relationship between the homology and homotopy of a space at infinity and at its boundary. Firstly, we prove that if a locally connected, connected, δ\delta-hyperbolic space that is acted upon geometrically by a group has trivial homotopy at infinity then the first \v{C}ech homotopy group is trivial. Secondly, we prove that if a hyperbolic group on a finite field has trivial ithi^{th} homology at infinity then the boundary of the group has trivial ithi^{th} Steenrod homology. This result turns out to be important in addressing an open problem related to Cannon's conjecture.

Keywords

Cite

@article{arxiv.2111.00342,
  title  = {Homotopy and Homology at Infinity and at the Boundary},
  author = {Mohammed Barhoush},
  journal= {arXiv preprint arXiv:2111.00342},
  year   = {2021}
}