Bushy pseudocharacters and group actions on quasitrees
Bushy pseudocharacters and group actions on quasitrees
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.57M07, 05C05; 20J06