Abstract
We give a cohomological characterisation of expander graphs, and use it to give a direct proof that expander graphs do not have Yu’s property A.
Citation
Ana Khukhro. Nick J Wright. "Expanders and property A." Algebr. Geom. Topol. 12 (1) 37 - 47, 2012. https://doi.org/10.2140/agt.2012.12.37
Information
Received: 22 August 2011; Revised: 3 October 2011; Accepted: 4 October 2011; Published: 2012
First available in Project Euclid: 19 December 2017
zbMATH: 1281.20049
MathSciNet: MR2889544
Digital Object Identifier: 10.2140/agt.2012.12.37
Subjects:
Primary:
20F65
,
20F69
,
51F99
,
55N20
Secondary:
05C80
,
43A07
,
55B20
,
68R10
Keywords:
Expanders
,
generalised cohomology
,
Yu's property A
Rights: Copyright © 2012 Mathematical Sciences Publishers
