The cup product of Brooks quasimorphisms-Reference-Cited by-同舟云学术

The cup product of Brooks quasimorphisms

Published:2018-09-01 Issue:5 Volume:30 Page:1157-1162
ISSN:1435-5337
Container-title:Forum Mathematicum
language:
Short-container-title:

Author:

Bucher Michelle¹,Monod Nicolas²

Affiliation:

1. University of Geneva, 1211Geneva4, Switzerland

2. École Polytechnique Fédérale de Lausanne, SB-MATH-EGG, 1015Lausanne, Switzerland

Abstract

AbstractWe prove the vanishing of the cup product of the bounded cohomology classes associated to any two Brooks quasimorphisms on the free group. This is a consequence of the vanishing of the square of a universal class for tree automorphism groups.

Publisher

Walter de Gruyter GmbH

Subject

Applied Mathematics,General Mathematics

Link

https://www.degruyter.com/document/doi/10.1515/forum-2017-0237/pdf

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