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Forum Mathematicum

Managing Editor: Bruinier, Jan Hendrik

Ed. by Blomer, Valentin / Cohen, Frederick R. / Droste, Manfred / Duzaar, Frank / Echterhoff, Siegfried / Frahm, Jan / Gordina, Maria / Shahidi, Freydoon / Sogge, Christopher D. / Takayama, Shigeharu / Wienhard, Anna

IMPACT FACTOR 2018: 0.867

CiteScore 2018: 0.71

SCImago Journal Rank (SJR) 2018: 0.898
Source Normalized Impact per Paper (SNIP) 2018: 0.964

Mathematical Citation Quotient (MCQ) 2018: 0.71

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Volume 27, Issue 3


Action-induced nested classes of groups and jump (co)homology

Nansen Petrosyan
Published Online: 2013-04-25 | DOI: https://doi.org/10.1515/forum-2012-0021


Using fixed-point-free group actions, we set up a scheme to define nested classes of groups indexed over ordinals. Restricting to cellular actions on CW-complexes, we find new classes of groups as well as new characterizations for some well-known classes. We extend some of the properties of the cohomological dimension of a group to groups with jump (co)homology and study their implications to cellular actions on finite dimensional CW-complexes that satisfy a quite general homological condition.

Keywords: Cellular action; jump cohomology; Hirsch length

MSC: 20J05

About the article

Received: 2012-03-01

Revised: 2013-03-04

Published Online: 2013-04-25

Published in Print: 2015-05-01

Funding Source: Research Fund KU Leuven

Funding Source: FWO-Flanders

Award identifier / Grant number: Research Fellowship

Citation Information: Forum Mathematicum, Volume 27, Issue 3, Pages 1591–1612, ISSN (Online) 1435-5337, ISSN (Print) 0933-7741, DOI: https://doi.org/10.1515/forum-2012-0021.

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