Nakayama's lemma

GPTKB entity

Statements (17)
Predicate Object
gptkbp:instanceOf gptkb:mathematical_concept
gptkbp:appliesTo modules over a ring
gptkbp:consequence If f: M → M is a surjective endomorphism of a finitely generated module M over a local ring, then f is an isomorphism.
A finitely generated module over a local ring is zero if and only if its reduction modulo the maximal ideal is zero.
gptkbp:field gptkb:commutative_algebra
gptkbp:firstPublished 1940s
gptkbp:generalizes gptkb:Krull's_intersection_theorem
https://www.w3.org/2000/01/rdf-schema#label Nakayama's lemma
gptkbp:namedAfter gptkb:Tadasi_Nakayama
gptkbp:relatedTo gptkb:Jacobson_radical
gptkbp:sentence If M is a finitely generated module over a local ring R with maximal ideal m, and mM = M, then M = 0.
If N is a submodule of a finitely generated module M such that M = N + mM, then M = N.
gptkbp:usedIn gptkb:algebraic_geometry
gptkb:commutative_algebra
module theory
gptkbp:bfsParent gptkb:commutative_algebra
gptkbp:bfsLayer 5