English

Multipliers of disposition $p$-groups

Number Theory 2021-12-28 v1

Abstract

Let pp be a prime number and c,dc, d natural numbers. Up to isomorphism, there is a unique pp-group GdcG^c_d of least order with rank dd and nilpotency class cc named disposition group. This group plays an important role in the construction of Galois extensions over number fields with given pp-group as Galois group. Also, it has a central series with all factors being elementary. Since G1cG^c_1 is abelian we consider d2d\geq 2. In this article, first, we determine the order of all its subgroups of lower central series and nn-th center subgroups of GdcG^c_d, (nN)(n\in\mathbb N). Then we deduce these groups are nn- capable. Also, the structure of the mm-nilpotent multiplier of GdcG^c_d is determined in two cases mcm\geq c and mcm\leq c. Finally, polynilpotent multiplier of disposition group of class row (m1,m2,,mt)(m_1,m_2,\ldots,m_t), when m1cm_1\leq c is calculated.

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Cite

@article{arxiv.2112.13324,
  title  = {Multipliers of disposition $p$-groups},
  author = {Mahboubeh Alizadeh Sanati},
  journal= {arXiv preprint arXiv:2112.13324},
  year   = {2021}
}

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7 pages