Subgroup series

（重定向自Normal series）

In mathematics, specifically group theory, a subgroup series is a chain of subgroups:

Subgroup series can simplify the study of a group to the study of simpler subgroups and their relations, and several subgroup series can be invariantly defined and are important invariants of groups. A subgroup series is used in the subgroup method.

单词	Normal series
释义	Normal series 英语百科 Subgroup series （重定向自Normal series） In mathematics, specifically group theory, a subgroup series is a chain of subgroups: Subgroup series can simplify the study of a group to the study of simpler subgroups and their relations, and several subgroup series can be invariantly defined and are important invariants of groups. A subgroup series is used in the subgroup method.
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