The notion of exterior centralizer $C^\wedge_G(x)$ of an element $x$ of a group $G$ is introduced in the present paper in order to improve some known results on the nonabelian tensor product of two groups. We study the structure of $G$ by looking at that of $C^\wedge_G(x)$ and we find some bounds for the Schur multiplier $M(G)$ of $G$.
|Numero di pagine||8|
|Rivista||Archiv der Mathematik|
|Stato di pubblicazione||Published - 2009|
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