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arXiv 1802.05804math.GR
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群的超扩张的自同构群

Automorphism groups of superextensions of groups

Taras Banakh, Volodymyr Gavrylkiv

摘要:

集合$X$的超扩展$λ(X)$由$X$上的所有极大连锁家族组成。任何关联二元运算$*: X\times X \to X$都可以扩展为关联二元运算$*: λ(X)\timesλ(X)\toλ(X)$。本文研究了群的超扩张的同构,证明了两个群同构当且仅当它们的超扩张同构。并刻画了所有基数群$\leq 5$的超扩张的自同构群。

英文摘要:

The superextension $λ(X)$ of a set $X$ consists of all maximal linked families on $X$. Any associative binary operation $*: X\times X \to X$ can be extended to an associative binary operation $*: λ(X)\timesλ(X)\toλ(X)$. In the paper we study isomorphisms of superextensions of groups and prove that two groups are isomorphic if and only if their superextensions are isomorphic. Also we describe the automorphism groups of superextensions of all groups of cardinality $\leq 5$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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