EntityQ743179· pop 33· linked from 414 articlesnormal subgroupSign in to savesubgroup invariant under conjugationConnectionscharacteristic subgroupEntityimageEntityLie groupEntitykernelEntitytopological groupEntityorthogonal groupEntitygreatest and least elementsEntitycommutator subgroupEntitycentralizerEntityindex of a subgroupEntityjoin and meetEntityInternational Standard Book NumberEntitycomplex numberEntityintegerEntityÉvariste GaloisEntitygroupEntityabstract algebraEntitygroup theoryEntityrotationEntitydeterminantEntityCategoriesSubgroup properties