Mathematics – Algebraic Topology
Scientific paper
2011-06-07
Mathematics
Algebraic Topology
21 pages
Scientific paper
In this paper, we use the theory of simplicial groups to develop the Schur multiplier of a pair of groups $(G,N)$ to the Baer invariant of it, $\mathcal{V}M(G,N)$, with respect to an arbitrary variety $\mathcal{V}$. Moreover, we present among other things some behaviors of Baer invariants of a pair of groups with respect to the free product and the direct limit. Finally we prove that the nilpotent multiplier of a pair of groups does commute with the free product of finite groups of mutually coprime orders.
Mashayekhy Behrooz
Mirebrahimi Hanieh
Vasagh Zohreh
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