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单词 Rank of a group
释义

Rank of a group

中文百科

秩 (群)

在数学的群论中,一个群Grank(G),是G的各个生成集合中最小的势,也就是

 \operatorname{rank}(G)=\min\{ |X|: X\subseteq G, \langle X\rangle =G\}.

G是有限生成群,则G的秩是非负整数。

群的秩这个群论概念,类似于矢量空间的维数。事实上,如果P是p-群,那么群P的秩,等于矢量空间P/Φ(P)的维数,其中Φ(P)是P的弗拉蒂尼子群。

英语百科

Rank of a group 秩 (群)

For the dimension of the Cartan subgroup, see Rank of a Lie group

In the mathematical subject of group theory, the rank of a group G, denoted rank(G), can refer to the smallest cardinality of a generating set for G, that is

If G is a finitely generated group, then the rank of G is a nonnegative integer. The notion of rank of a group is a group-theoretic analog of the notion of dimension of a vector space. Indeed, for p-groups, the rank of the group P is the dimension of the vector space P/Φ(P), where Φ(P) is the Frattini subgroup.

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更新时间:2025/6/27 8:43:03