Noetherian group
This article defines a group property: a property that can be evaluated to true/false for any given group, invariant under isomorphism
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This is a variation of finiteness (groups)|Find other variations of finiteness (groups) |
Definition
Symbol-free definition
A group is said to be Noetherian or slender or to satisfy the maximum condition on subgroups if it satisfies the following equivalent conditions:
- Every subgroup is finitely generated
- Any ascending chain of subgroups stabilizes after a finite length.
- Any nonempty collection of subgroups has a maximal element: a member of that collection that is not contained in any other member of the collection.
Formalisms
In terms of the hereditarily operator
This property is obtained by applying the hereditarily operator to the property: finitely generated group
View other properties obtained by applying the hereditarily operator
Metaproperties
Metaproperty name | Satisfied? | Proof | Statement with symbols |
---|---|---|---|
subgroup-closed group property | Yes | Noetherianness is subgroup-closed | If is a Noetherian group and is a subgroup, then is Noetherian. |
quotient-closed group property | Yes | Noetherianness is quotient-closed | If is a Noetherian group and is a normal subgroup, the quotient group is Noetherian. |
extension-closed group property | Yes | Noetherianness is extension-closed | If is a normal subgroup of such that both and are Noetherian, then is also Noetherian. |
Relation with other properties
Stronger properties
Property | Meaning | Proof of implication | Proof of strictness (reverse implication failure) | Intermediate notions |
---|---|---|---|---|
finite group | |FULL LIST, MORE INFO | |||
finitely generated abelian group | finitely generated and abelian | |FULL LIST, MORE INFO | ||
finitely generated nilpotent group | finitely generated and nilpotent | |FULL LIST, MORE INFO | ||
supersolvable group | has a normal series where all successive quotients are cyclic | |FULL LIST, MORE INFO | ||
polycyclic group | slender and solvable | |FULL LIST, MORE INFO |
Weaker properties
Property | Meaning | Proof of implication | Proof of strictness (reverse implication failure) | Intermediate notions |
---|---|---|---|---|
Finitely generated group | |FULL LIST, MORE INFO | |||
Maximal-covering group | |FULL LIST, MORE INFO | |||
Group satisfying ascending chain condition on subnormal subgroups | |FULL LIST, MORE INFO | |||
Group satisfying subnormal join property | |FULL LIST, MORE INFO | |||
Group satisfying ascending chain condition on normal subgroups | |FULL LIST, MORE INFO | |||
Hopfian group | every surjective endomorphism is an automorphism | Noetherian implies Hopfian | Hopfian not implies Noetherian | |FULL LIST, MORE INFO |
Finitely generated Hopfian group | finitely generated and Hopfian | Noetherian implies Hopfian | |FULL LIST, MORE INFO | |
Minimax group | |FULL LIST, MORE INFO | |||
Group in which every locally finite subgroup is finite | |FULL LIST, MORE INFO |
Conjunction with other properties
Conjunction | Other component of conjunction | Intermediate notions between slender group and conjunction | Intermediate notions between other component and conjunction |
---|---|---|---|
Finitely generated abelian group | abelian group | |FULL LIST, MORE INFO | |FULL LIST, MORE INFO |
Finitely generated nilpotent group | nilpotent group | |FULL LIST, MORE INFO | |FULL LIST, MORE INFO |
Polycyclic group | solvable group | |FULL LIST, MORE INFO | |FULL LIST, MORE INFO |
Related properties
Property | Meaning | Proof of one non-implication | Proof of other non-implication | Notions stronger than both | Notions weaker than both |
---|---|---|---|---|---|
Artinian group | any descending chain of subgroups stabilizes after finitely many steps | Noetherian not implies Artinian | Artinian not implies Noetherian | |FULL LIST, MORE INFO | |FULL LIST, MORE INFO |
Finitely presented group | has a finite presentation | Noetherian not implies finitely presented | finitely presented not implies Noetherian | |FULL LIST, MORE INFO | |FULL LIST, MORE INFO |