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Theorems · Theorem · commutative algebra

Ideal.map_map

∀ {R : Type u} {S : Type v} [inst : Semiring R] [inst_1 : Semiring S] {T : Type u_3} [inst_2 : Semiring T] {I : Ideal R}
  (f : R →+* S) (g : S →+* T), Ideal.map g (Ideal.map f I) = Ideal.map (g.comp f) I
Defined in
Mathlib.RingTheory.Ideal.Maps
Cited by
37 results in Mathlib
Foundations
Depth 28 from the axioms · uses propext, Quot.sound
Assumes
SemiringSemiringSemiring

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

Ideal.ramificationIdx_pos · cited by 5Ideal.ramificationIdx_posAlgebraicGeometry.Scheme.IdealSheafData.map_ideal · cited by 5IdealSheafData.map_idealIdeal.ramificationIdx_eq_one_iff · cited by 4Ideal.ramificationIdx_eq_…Ideal.relNorm_algebraMap · cited by 4Ideal.relNorm_algebraMapIdeal.ramificationIdx'_eq_one_of_map_localization · cited by 3Ideal.ramificationIdx'_eq…Ideal.ramificationIdx'_eq_ramificationIdx' · cited by 3Ideal.ramificationIdx'_eq…Ideal.ramificationIdx_eq_one · cited by 3Ideal.ramificationIdx_eq_…Ideal.IsDedekindDomain.ramificationIdx'_eq_one_iff · cited by 3IsDedekindDomain.ramifica…AdicCompletion.isMaximal_map_of_le · cited by 3AdicCompletion.isMaximal_…PowerSeries.eq_span_insert_X_of_X_mem_of_span_eq · cited by 2PowerSeries.eq_span_inser…Ideal.ramificationIdx'_algebra_tower · cited by 2Ideal.ramificationIdx'_al…Ideal.map_prodComm_prod · cited by 2Ideal.map_prodComm_prodAlgebra.WeaklyQuasiFiniteAt.baseChange · cited by 2WeaklyQuasiFiniteAt.baseC…Algebra.isUnramifiedAt_iff_map_eq · cited by 2Algebra.isUnramifiedAt_if…Ideal.image_subset_nonunits_valuationSubring · cited by 2Ideal.image_subset_nonuni…Semiring · cited by 13802SemiringRingHom · cited by 10189RingHomIdeal · cited by 4748IdealRingHom.comp · cited by 899RingHom.compIdeal.map · cited by 692Ideal.mapIdeal.comap_comap · cited by 27Ideal.comap_comapIdeal.gc_map_comap · cited by 17Ideal.gc_map_comapGaloisConnection.compose · cited by 6GaloisConnection.composeGaloisConnection.l_unique · cited by 5GaloisConnection.l_uniqueIdeal.map_mapCITED BYCITES

Cites9

Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.

Cited by37

Results whose statement or proof uses this declaration.