Primitive permutation group

（重定向自Primitive group）

In mathematics, a permutation group G acting on a set X is called primitive if G acts transitively on X and G preserves no nontrivial partition of X. (The hypothesis of transitivity can be dropped if $|X|>2$ .) Otherwise, if G is transitive and G does preserve a nontrivial partition, G is called imprimitive.

单词	Primitive group
释义	Primitive group 原声例句古生物经典纪录片 Some are from the same clan as Deinonychus; others are from more primitive groups like Oviraptors and Tyrannosaurs. 有些与恐爪龙属于同一氏族；有些则来自恐爪龙。其他的则来自更原始的群体，如偷蛋龙和暴龙。英语百科 Primitive permutation group （重定向自Primitive group） In mathematics, a permutation group G acting on a set X is called primitive if G acts transitively on X and G preserves no nontrivial partition of X. (The hypothesis of transitivity can be dropped if $\|X\|>2$ .) Otherwise, if G is transitive and G does preserve a nontrivial partition, G is called imprimitive.
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