Geodesic
Cohomological periodicity in graph products of combinatorially aspherical groups
Glasgow mathematical journal, Tome 35 (1993) no. 1, pp. 123-129

Voir la notice de l'article provenant de la source Cambridge University Press

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). 
Horadam, K. J. Cohomological periodicity in graph products of combinatorially aspherical groups. Glasgow mathematical journal, Tome 35 (1993) no. 1, pp. 123-129. doi: 10.1017/S0017089500009642
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