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In mathematics, in the field of group theo … In mathematics, in the field of group theory, a subgroup of a group is said to be transitively normal in the group if every normal subgroup of the subgroup is also normal in the whole group. In symbols, is a transitively normal subgroup of if for every normal in , we have that is normal in . An alternate way to characterize these subgroups is: every normal subgroup preserving automorphism of the whole group must restrict to a normal subgroup preserving automorphism of the subgroup. Here are some facts about transitively normal subgroups:
* Every normal subgroup of a transitively normal subgroup is normal.
* Every , or more generally, every central factor is transitively normal. Thus, every central subgroup is transitively normal.
* A transitively normal subgroup of a transitively normal subgroup is transitively normal.
* A transitively normal subgroup is normal. A transitively normal subgroup is normal.
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| rdfs:comment |
In mathematics, in the field of group theo … In mathematics, in the field of group theory, a subgroup of a group is said to be transitively normal in the group if every normal subgroup of the subgroup is also normal in the whole group. In symbols, is a transitively normal subgroup of if for every normal in , we have that is normal in . An alternate way to characterize these subgroups is: every normal subgroup preserving automorphism of the whole group must restrict to a normal subgroup preserving automorphism of the subgroup. Here are some facts about transitively normal subgroups:facts about transitively normal subgroups:
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| rdfs:label |
Transitively normal subgroup
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