Ferdowsi University of Mashhad

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20022015

most citedThe Origin of the Arches Stellar Cluster Mass Function

89 citations

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8 papers · 1 filter

math.GR2012

Some outer commutator multipliers and capability of nilpotent products of cyclic groups

Mohsen Parvizi, Behrooz Mashayekhy

In this paper, first we obtain an explicit formula for an outer commutator multiplier of nilpotent products of cyclic groups with respect to the variety $[\mathfrak{N}_{c_1},\mathf…

math.GR2011

Some Notes on the Baer Invariant of a Nilpotent Product of Groups

Behrooz Mashayekhy

W.Haebich (Bull. Austral. Math. Soc., 7, 1972, 279-296) presented a formula for the Schur multiplier of a regular product of groups. In this paper first, it is shown that the Baer-…

math.GR2011

On the Order of Nilpotent Multipliers of Finite p-Groups

Behrooz Mashayekhy, Mahboobeh Alizadeh Sanati

Let $G$ be a finite $p$ -group of order $p^{n}$ . YA. G. Berkovich (Journal of Algebra {\bf 144}, 269-272 (1991)) proved that $G$ is elementary abelian $p$ -group if and only if the ord…

math.GR2011★ 3 cited

On Polynilpotent Covering Groups of a Polynilpotent Group

Behrooz Mashayekhy, Mahboobeh Alizadeh Sanati

Let $N_{c_{1}, ..., c_{t}}$ be the variety of polynilpotent groups of class row $(c_{1}, ..., c_{t})$ . In this paper, first, we show that a polynilpotent group $G$ of class row $(c_1,..…

math.GR2011

Some Baer Invariants of Free Nilpotent Groups

Behrooz Mashayekhy, Mohsen Parvizi

We present an explicit structure for the Baer invariant of a free $n$ th nilpotent group (the $n$ th nilpotent product of infinite cyclic groups, $\textbf{Z}\st{n}* \textbf{Z}\st{n}*…

math.GR2011

Generalized Covering Groups and Direct Limits

Behrooz Mashayekhy, Hanieh Mirebrahimi

M. R. R. Moghaddam (Monatsh. Math. 90 (1980) 37-43.) showed that the Baer invariant commutes with the direct limit of a directed system of groups. In this paper, using the generali…