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JOURNALS // Zapiski Nauchnykh Seminarov POMI // Archive

Zap. Nauchn. Sem. POMI, 2016 Volume 452, Pages 108–131 (Mi znsl6359)

This article is cited in 4 papers

On ultrasolvability of $p$-extensions of an abelian group by a cyclic kernel

D. D. Kiselev

All-Russian Academy of International Trade, Moscow, Russia

Abstract: We solve a problem in the embedding theory by A. V. Yakovlev for $p$-extensions of odd order with cyclic normal subgroup and abelian quotient-group: for such nonsplit extensions there exists a realization for the quotient-group as Galois group over number fields such as corresponding embedding problem is ultrasolvable (i.e. this embedding problem is solvable and has only fields as solutions). Also we give a solution for embedding problems of $p$-extensions of odd order with kernel of order $p$ and with a quotient-group which is represented by direct product of its proper subgroups – this is a generalization for $p>2$ an analogous result for $p=2$ by A. Ledet.

Key words and phrases: ultrasolvability, embedding problem.

UDC: 512.623.32

Received: 04.07.2016


 English version:
Journal of Mathematical Sciences (New York), 2018, 232:5, 662–676

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© Steklov Math. Inst. of RAS, 2025