Some non-amenable groups.

DOI10.5565/PUBLMAT_56112_09zbMath1264.20032arXiv1006.5389OpenAlexW2046728064MaRDI QIDQ433399

Aditi Kar, Graham A. Niblo

Publication date: 13 July 2012

Published in: Publicacions Matemàtiques (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/1006.5389

zbMATH Keywords

cohomologyfinitely generated groupsorbifoldsEuler characteristicsBetti numbersKazhdan property (T)deficiencies of presentationsnormal amenable subgroups

Mathematics Subject Classification ID

Generators, relations, and presentations of groups (20F05) Cohomology of groups (20J06) Means on groups, semigroups, etc.; amenable groups (43A07)

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