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Journal of Group Theory

Editor-in-Chief: Parker, Christopher W.

Managing Editor: Wilson, John S. / Khukhro, Evgenii I. / Kramer, Linus

6 Issues per year

IMPACT FACTOR 2017: 0.581

CiteScore 2017: 0.53

SCImago Journal Rank (SJR) 2017: 0.778
Source Normalized Impact per Paper (SNIP) 2017: 0.893

Mathematical Citation Quotient (MCQ) 2017: 0.45

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Volume 18, Issue 2


Infinitely-ended hyperbolic groups with homeomorphic Gromov boundaries

Alexandre Martin / Jacek Świątkowski
Published Online: 2014-11-28 | DOI: https://doi.org/10.1515/jgth-2014-0043


We show that the Gromov boundary of the free product of two infinite hyperbolic groups is uniquely determined up to homeomorphism by the homeomorphism types of the boundaries of its factors. We generalize this result to graphs of hyperbolic groups over finite subgroups. Finally, we give a necessary and sufficient condition for the Gromov boundaries of any two hyperbolic groups to be homeomorphic (in terms of the topology of the boundaries of factors in terminal splittings over finite subgroups).

About the article

Received: 2014-02-06

Published Online: 2014-11-28

Published in Print: 2015-03-01

Funding Source: European Research Council (ERC)

Award identifier / Grant number: 259527

Funding Source: Polish Ministry of Science and Higher Education (MNiSW)

Award identifier / Grant number: N201 541738

Funding Source: Polish National Science Centre (NCN)

Award identifier / Grant number: 2012/06/ST1/00259

Citation Information: Journal of Group Theory, Volume 18, Issue 2, Pages 273–289, ISSN (Online) 1435-4446, ISSN (Print) 1433-5883, DOI: https://doi.org/10.1515/jgth-2014-0043.

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Mathematical Proceedings of the Cambridge Philosophical Society, 2017, Volume 162, Number 02, Page 249

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