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Geometry of infinitely presented small cancellation groups and quasi-homomorphisms

Abstract:
We study the geometry of inûnitely presented groups satisfying the small cancellation condition C′(1/8), and introduce a standard decomposition (called the criss-cross decomposition) for the elements of such groups. Our method yields a direct construction of a linearly independent set of power continuum in the kernel of the comparison map between the bounded and the usual group cohomology in degree 2, without the use of free subgroups and extensions.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.4153/CJM-2018-036-7

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Mathematical Institute
Role:
Author


Publisher:
Canadian Mathematical Society
Journal:
Canadian Journal of Mathematics More from this journal
Volume:
71
Issue:
5
Pages:
997-1018
Publication date:
2018-12-26
Acceptance date:
2018-08-13
DOI:
EISSN:
1496-4279
ISSN:
0008-414X


Keywords:
Pubs id:
pubs:369814
UUID:
uuid:55a8a56f-5b72-4676-90d8-b098b1a7dbb7
Local pid:
pubs:369814
Source identifiers:
369814
Deposit date:
2018-09-20

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