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In [[mathematics]], in the field of [[group theory]], a '''HN group''' or '''hypernormalizing group''' is a [[group (mathematics)|group]] with the property that the [[hypernormalizer]] of any [[subnormal subgroup]] is the whole group. |
In [[mathematics]], in the field of [[group theory]], a '''HN group''' or '''hypernormalizing group''' is a [[group (mathematics)|group]] with the property that the [[hypernormalizer]] of any [[subnormal subgroup]] is the whole group. |
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Revision as of 01:26, 31 May 2020
 | This article relies largely or entirely on a single source. (June 2019) |
In mathematics, in the field of group theory, a HN group or hypernormalizing group is a group with the property that the hypernormalizer of any subnormal subgroup is the whole group.
For finite groups, this is equivalent to the condition that the normalizer of any subnormal subgroup be subnormal.
Some facts about HN groups:
- Subgroups of solvable HN groups are solvable HN groups.
- Metanilpotent A-groups are HN groups.
References
Finite Soluble Hypernormalizing Groups by Alan R. Camina in Journal of Algebra Vol 8 (362–375), 1968
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