“centralizer”的概念、定义、翻译、参考文献-科学参考

单词	centralizer
释义	centralizer Mathematics The centralizer C_G(a) of an element a in a group G is $C_{G} (a) = {g \in G : ga = ag} .$ It is a subgroup of G and $\| C_{G} (a) \| \times \| C (a) \| = \| G \|,$ where C(a) denotes the conjugacy class of a. More generally, for a subset S ⊆ G, then $C_{G} (S) = {g \in G : gs = sg for all s \in S} .$ Compare normalizer.
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