S. Marzang

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math.GR2017

A generalization of Neumann's Question

A. Ahmadkhah, S. Marzang, M. Zarrin

Let $G$ be a group, $m \geq 2$ and $n \geq 1$ . We say that $G$ is an $T (m, n)$ -group if for every $m$ subsets $X_{1}, X_{2}, \dots, X_{m}$ of $G$ of cardinality $n$ , there exists $i…

math.GR2017

On number of isomorphism classes of derived subgroups

Leyli Jafari Taghvasani, Soran Marzang

In this paper we show that a finite nonabelian characteristically simple group G satisfying n = |π(G)|+2 if and only if G is isomorphic to A5, where n is the number of isomorphism…