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More about the (co)homology of groups and associative algebras
It is proved that the homology and cohomology theories of groups and associative algebras are non-abelian derived functors of the cokernel and kernel groups of higher dimensions of their defining standard chain and cochain complexes respectively. The same results are also obtained for the relative (...
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Published in: | Homology, homotopy, and applications homotopy, and applications, 2005, Vol.7 (1), p.87-108 |
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Main Author: | |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | It is proved that the homology and cohomology theories of groups and associative
algebras are non-abelian derived functors of the cokernel and kernel groups of
higher dimensions of their defining standard chain and cochain complexes
respectively. The same results are also obtained for the relative (co)homology
of groups, the mod q cohomology of groups and the cohomology of groups with
operators. This allowed us to give an alternative approach to higher Hopf
formulas for integral homology of groups. An axiomatic characterization of the
relative cohomology of groups is given and higher relative (n+1)-th cohomology
of groups is described in terms of n-fold extensions. |
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ISSN: | 1532-0073 1532-0081 |
DOI: | 10.4310/HHA.2005.v7.n1.a6 |