Difference between revisions of "Intersection of subnormal subgroups"
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Latest revision as of 22:12, 22 February 2009
This article defines a subgroup property: a property that can be evaluated to true/false given a group and a subgroup thereof, invariant under subgroup equivalence. View a complete list of subgroup properties[SHOW MORE]
If the ambient group is a finite group, this property is equivalent to the property: subnormal subgroup
View other properties finitarily equivalent to subnormal subgroup | View other variations of subnormal subgroup |
- It can be expressed as the intersection of a descending chain of subnormal subgroups.
- It can be expressed as an intersection of subnormal subgroups.
Note that since subnormality of fixed depth is closed under arbitrary intersections, these two definitions are equivalent.