Subgroup contained in finitely many intermediate subgroups

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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]

Definition

Symbol-free definition

A subgroup of a group is said to be contained in finitely many intermediate subgroups if the number of subgroups of the whole group containing that subgroup is finite.

Definition with symbols

A subgroup H of a group G is said to be contained in finitely many intermediate subgroups if the number of subgroups K of G such that H \le K \le G is finite.

Relation with other properties

Stronger properties

Facts

Metaproperties

Transitivity

NO: This subgroup property is not transitive: a subgroup with this property in a subgroup with this property, need not have the property in the whole group
ABOUT THIS PROPERTY: View variations of this property that are transitive|View variations of this property that are not transitive
ABOUT TRANSITIVITY: View a complete list of subgroup properties that are not transitive|View facts related to transitivity of subgroup properties | View a survey article on disproving transitivity

If H \le K \le G are groups such that K is contained in only finitely many intermediate subgroups of G and H is contained in only finitely many intermediate subgroups of K, it may well happen that H is contained in infinitely many intermediate subgroups of G.

Intermediate subgroup condition

YES: This subgroup property satisfies the intermediate subgroup condition: if a subgroup has the property in the whole group, it has the property in every intermediate subgroup.
ABOUT THIS PROPERTY: View variations of this property satisfying intermediate subgroup condition | View variations of this property not satisfying intermediate subgroup condition
ABOUT INTERMEDIATE SUBROUP CONDITION:View all properties satisfying intermediate subgroup condition | View facts about intermediate subgroup condition

If H \le K \le G are groups such that H is contained in only finitely many intermediate subgroups of G, then H is also contained in only finitely many intermediate subgroups of K.

Upward-closedness

This subgroup property is upward-closed: if a subgroup satisfies the property in the whole group, every intermediate subgroup also satisfies the property in the whole group
View other upward-closed subgroup properties

If H \le K \le G are groups such that H is contained in only finitely many intermediate subgroups of G, then K is also contained in only finitely many intermediate subgroups of G.