名词
中文翻译：外部同构性
同义词：
['outer automorphism', 'outer automorphisms']
例句：
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1.The outer automorphism of a group is the set of all bijections from the group to its multiplicative closure.
一个群的外部同构是指从群到其乘法闭包的所有双射集合。
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2.In mathematics, an outer automorphism is a group element that maps each element of the group to itself.
在数学中，外同构是一个群元素，它将群中的每个元素映射到自身。
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3.The outer automorphism group of a finite group is the group of all possible bijections from the group to its multiplicative closure.
有限群的外同构群是所有可能的双射从群到其乘法闭包的群。