EntityQ3527189· pop 8· linked from 15 articlescorrespondence theoremSign in to savetheorem in mathematical group theoryConnectionsclosure operatorEntityInternational Standard Book NumberEntitygroupEntityvector spaceEntitygroup theoryEntityringEntitybijectionEntityalgebraic structureEntityidentity elementEntitymoduleEntitysubgroupEntitynormal subgroupEntityquotient groupEntitycosetEntityalgebra over a fieldEntitycongruence relationEntityisomorphism theoremEntitygenerating set of a groupEntityindex of a subgroupEntityGalois connectionEntityCategoriesIsomorphism theorems