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Cohomological periodicity in graph products of combinatorially aspherical groups

Published online by Cambridge University Press:  18 May 2009

K. J. Horadam
Affiliation:
CMR Group, ERL, D.S.T.O. c/o DVR2, A Block, New Wing Victoria Barracks, MelbourneAustralia3004 Department of MathematicsR.M.I.T.G.P.O. Box 2476V, MelbourneAustralia3001
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The notion of a group G having periodic cohomology after k steps was introduced by Talelli in [10], and is equivalent to having the functors Hm(G, —) and Hm+q(G, —) naturally isomorphic for some q ≥ 1 and all m ≥k + 1. It extends to infinite groups the long-understood phenomenon of cohomological periodicity for finite groups (for which k = 0).

Type
Research Article
Copyright
Copyright © Glasgow Mathematical Journal Trust 1993

References

REFERENCES

1.Bieri, R. and Talelli, O., Group pairs with periodic cohomology, J. Pure Appl. Algebra 64 (1990), 229238.CrossRefGoogle Scholar
2.Brown, K. S., Cohomology of groups (GTM 87, Springer, New York, 1982).CrossRefGoogle Scholar
3.Chiswell, I. M., Collins, D. J. and Huebschmann, J., Aspherical group presentations, Math. Z. 178 (1981), 136.CrossRefGoogle Scholar
4.Horadam, K. J., The cup product and coproduct for a combinatorially aspherical group, J. Pure Appl. Algebra 33 (1984), 4147.CrossRefGoogle Scholar
5.Horadam, K. J., The cohomology ring of a combinatorially aspherical group, J. Austral. Math. Soc. (Series A) 47 (1989), 453457.CrossRefGoogle Scholar
6.Horadam, K. J., The cup product for a graph product of combinatorially aspherical groups, Comm. Algebra 18 (1990), 32453262.CrossRefGoogle Scholar
7.Horadam, K. J., The cohomology ring of an HNN extension of combinatorially aspherical groups, J. Pure Appl. Algebra 72 (1991), 2332.CrossRefGoogle Scholar
8.Huebschmann, J., Cohomology theory of aspherical groups and of small cancellation groups, J. Pure Appl. Algebra 14 (1979), 137143.CrossRefGoogle Scholar
9.Lyndon, R. C. and Schupp, P. E., Combinatorial group theory (Springer, Berlin, 1977).Google Scholar
10.Talelli, O., On cohomological periodicity for infinite groups, Comment. Math. Helv. 55 (1980), 178192.CrossRefGoogle Scholar
11.Talelli, O., On groups with periodic cohomology after 1-step, J. Pure Appl. Algebra 30 (1983), 8593.CrossRefGoogle Scholar