Artículos de revistas
On cohomologies and extensions of cyclic groups
Fecha
2011Registro en:
TOPOLOGY AND ITS APPLICATIONS, v.158, n.14, Special Issue, p.1858-1865, 2011
0166-8641
10.1016/j.topol.2011.06.022
Autor
GOLASINSKI, Marek
GONCALVES, Daciberg Lima
Institución
Resumen
Cohomology groups H(s)(Z(n), Z(m)) are studied to describe all groups up to isomorphism which are (central) extensions of the cyclic group Z(n) by the Z(n)-module Z(m). Further, for each such a group the number of non-equivalent extensions is determined. (C) 2011 Elsevier B.V. All rights reserved.