| 单词 |
normal subgroup |
| 释义 |
DictionarySeeNormal groupNormal Subgroup
normal subgroup[′nȯr·məl ′səb‚grüp] (mathematics) A subgroup N of a group G where every expression g -1 ng is in N for every g in G and every n in N. Also known as invariant subgroup; normal divisor. Normal Subgroup (also normal divisor of a group, invariant subgroup), a fundamental concept of group theory, which was introduced by E. Galois. A normal subgroup of a group G is a subgroup H for which gH = Hg for arbitrary element g of group G. |
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