Hyperbolic groups that are not commensurably coHopfian

Autor:	Stark, Emily, Woodhouse, Daniel J.
Rok vydání:	2018
Předmět:	Mathematics - Group Theory Mathematics - Geometric Topology 20F65 20F67 20E07 57M07
Druh dokumentu:	Working Paper
Popis:	Sela proved every torsion-free one-ended hyperbolic group is coHopfian. We prove that there exist torsion-free one-ended hyperbolic groups that are not commensurably coHopfian. In particular, we show that the fundamental group of every simple surface amalgam is not commensurably coHopfian. Comment: v3: 14 pages, 4 figures; minor changes. To appear in International Mathematics Research Notices
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1812.07799 Zobrazit plný text záznamu View this record from Arxiv