Editing Normal subgroup (section)

==See also==
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===Operations taking subgroups to subgroups===
*[[Normalizer]]
*[[Normal closure (group theory)|Normal closure]]
*[[Normal core]]

===Subgroup properties complementary (or opposite) to normality===
*[[Malnormal subgroup]]
*[[Contranormal subgroup]]
*[[Abnormal subgroup]]
*[[Self-normalizing subgroup]]

===Subgroup properties stronger than normality===
*[[Characteristic subgroup]]
*[[Fully characteristic subgroup]]

===Subgroup properties weaker than normality===
*[[Subnormal subgroup]]
*[[Ascendant subgroup]]
*[[Descendant subgroup]]
*[[Quasinormal subgroup]]
*[[Seminormal subgroup]]
*[[Conjugate permutable subgroup]]
*[[Modular subgroup]]
*[[Pronormal subgroup]]
*[[Paranormal subgroup]]
*[[Polynormal subgroup]]
*[[C-normal subgroup]]

===Related notions in algebra===
*[[Ideal (ring theory)]]
*[[Semigroup ideal]]

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