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ISSN (electronic): 1472-2739
ISSN (print): 1472-2747
Bushy pseudocharacters and group actions on quasitrees

Álvaro Martínez-Pérez

Algebraic & Geometric Topology 12 (2012) 1721–1739
Abstract

Given a group acting on a graph quasi-isometric to a tree, we give sufficient conditions for a pseudocharacter to be bushy. We relate this with the conditions studied by Bestvina and Fujiwara on their work on bounded cohomology and obtain some results on the space of pseudocharacters.

Keywords
group action, quasitree, bushy pseudocharacter
Mathematical Subject Classification 2010
Primary: 57M07, 05C05
Secondary: 20J06
References
Publication
Received: 20 July 2011
Revised: 17 April 2012
Accepted: 31 May 2012
Published: 4 August 2012
Authors
Álvaro Martínez-Pérez
Departamento de Análisis Económico y Finanzas
Universidad de Castilla-La Mancha
Avda Real Fábrica de Seda, s/n
45600 Talavera de la Reina
Toledo
Spain