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Normal Subgroup |
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normal subgroup [′nȯr·məl ′səb‚grüp]
(mathematics) A subgroupNof a groupGwhere every expressiong-1ngis inNfor everyginGand everyninN. 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. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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