On finite group of small orders

碩士 === 淡江大學 === 數學學系碩士班 === 98 === We study the "semidirect product" of two groups H and K, which is a generalization of the direct product of H and K obtained by relaxing the requirement that both H and K be normal. Semidirect product construction will enable us to build a "...

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Bibliographic Details
Main Authors: Huei-Di Yang, 楊惠迪
Other Authors: 李武炎
Format: Others
Language:en_US
Published: 2010
Online Access:http://ndltd.ncl.edu.tw/handle/47662809493383435426
Description
Summary:碩士 === 淡江大學 === 數學學系碩士班 === 98 === We study the "semidirect product" of two groups H and K, which is a generalization of the direct product of H and K obtained by relaxing the requirement that both H and K be normal. Semidirect product construction will enable us to build a "larger" group from the groups H and K. If G contains subgroups isomorphic to H and K, in this case the subgroup H will be normal in G but the subgroup K will not necessarily be normal. Thus, we shall be able to construct non-abelian groups even if H and K are abelian.