Common transversals and complements in abelian groups

Pub Date : 2024-02-24 DOI:10.1007/s10801-024-01299-x
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Abstract

Given a finite abelian group G and cyclic subgroups A, B, C of G of the same order, we find necessary and sufficient conditions for A, B, C to admit a common transversal for the cosets they afford. For an arbitrary number of cyclic subgroups, we give a sufficient criterion when there exists a common complement. Moreover, in several cases where a common transversal exists, we provide concrete constructions.

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无边群中的公共横截面和补集
摘要 给定一个有限无秩群 G 和 G 的同阶循环子群 A、B、C,我们发现 A、B、C 的余集有必要条件和充分条件。对于任意数量的循环子群,我们给出了存在共同补集的充分条件。此外,在存在共同横截面的几种情况下,我们提供了具体的构造。
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