[Merged by Bors] - feat(RingTheory/Artinian): IsUnit a iff a ∈ R⁰ for an artinian ring R#21084
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[Merged by Bors] - feat(RingTheory/Artinian): IsUnit a iff a ∈ R⁰ for an artinian ring R#21084
IsUnit a iff a ∈ R⁰ for an artinian ring R#21084Conversation
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mistarro
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Jan 26, 2025
… an artinian ring `R`
PR summary aab53147e3Import changes for modified filesNo significant changes to the import graph Import changes for all files
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erdOne
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Jan 26, 2025
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IsUnit a iff a ∈ nonZeroDivisors R for an artinian ring RIsUnit a iff a ∈ R⁰ for an artinian ring R
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🚀 Pull request has been placed on the maintainer queue by erdOne. |
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Pull request successfully merged into master. Build succeeded: |
IsUnit a iff a ∈ R⁰ for an artinian ring RIsUnit a iff a ∈ R⁰ for an artinian ring R
Julian
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Jan 28, 2025
* origin/master: (294 commits) feat: equalizers and coequalizers in the category of ind-objects (#21139) doc: turn more links to Stacks into `@[stacks]` tags (#21135) feat(Asymptotics): prove `IsLittleOTVS.add` (#20578) feat(Algebra/Polynomial): `Polynomial.aeval` for product algebras (#21062) chore: import Std in Mathlib.lean (#21126) feat(Data/Matroid/Circuit): fundamental circuits and extensionality (#21145) feat(CategoryTheory/Endofunctor): prove the dual form of Lambek's Lemma on terminal coalgebra (#21140) feat(SetTheory/Game/PGame): rewrite left moves of `-x` as right moves of `x` under binders (#21109) feat(RingTheory/Localization/Pi): localization of a finite direct product is a product of localizations (#19042) doc: fixed notation error in customizing category composition (#21132) feat(Matrix): more lemmas for `PEquiv.toMatrix` (#21143) chore(SupIndep): speedup the `Decidable` instance (#21114) fix(CI): use `Elab.async=false` for late importers workflow (#21147) feat(Topology/Algebra/Indicator): indicator of a clopen is continuous (#20687) feat(Data/Matroid/Rank/Cardinal): Cardinality-valued rank function (#20921) feat(Algebra): `Pi.single_induction` (#21141) chore(BigOperators/Fin): golf a proof (#21131) feat: generalize tangent cone lemmas to TVS (#20859) feat(CategoryTheory): `Comma.snd L R` is final if `R` is final and domains are filtered (#21136) refactor: unapply matrix lemmas (#21091) chore(Algebra/Category): `erw` -> `rw` (#21130) feat(CategoryTheory): filteredness of Comma catgories given finality of one of the functors (#21128) feat(Algebra/Category): `ConcreteCategory` instance for `ModuleCat` (#21125) feat: PSum of finite sorts is finite (#20285) feat: inequality on the integral of a convex function of a RN derivative (#21093) feat: `(v +ᵥ s) -ᵥ (v +ᵥ t) = s -ᵥ t` (#21058) chore: rename the fact that `(∀ a < a₁, a ≤ a₂) ↔ a₁ ≤ a₂` in a dense order (#20317) feat: a `RelHom` preserves directedness (#20080) feat(Combinatorics/SimpleGraph): add definitions and theorems about the coloring of sum graphs (#18677) chore(Data/Matrix/PEquiv): clean up names (#21108) feat(Algebra/Category): `ConcreteCategory` instances for rings (#20815) feat: define Descriptive.Tree (#18763) chore(Data/Complex/Exponential): split trig functions to new file (#21075) feat(Logic/IsEmpty/Relator): empty on sides (#20319) feat(Algebra/Category): `ConcreteCategory` instance for `AlgebraCat` (#21121) feat(NumberTheory/LSeries): results involving partial sums of coefficients (part 1) (#20661) feat(RingTheory/LaurentSeries): add algebraEquiv (#21004) chore(SetTheory/Game/Impartial): golf two proofs (#21074) feat(CategoryTheory/Subpresheaf): preimage/image/range of subpresheaves (#21047) feat(RingTheory/IntegralClosure): `Algebra.IsIntegral` transfers via surjective homomorphisms (#21023) feat(`InformationTheory/Hamming`): Add AddGroup instances (#20994) feat(RingTheory/IntegralClosure): prove `Module.Finite R (adjoin R S)` for finite set `S` of integral elements (#20970) feat(RingTheory/Artinian): `IsUnit a` iff `a ∈ R⁰` for an artinian ring `R` (#21084) feat: separating set in the category of ind-objects (#21082) feat: derivWithin lemmas (#21092) chore(Fintype): golf a proof (#21113) chore: golf using `funext₂` (#21106) chore(Algebra/Group/Submonoid/Operations): move instances to new file (#21067) doc(Algebra/BigOperators/Fin): change 'product' to 'sum' in doc-string of additivised declarations (#21101) doc(ComputeDegree): typos (#21095) ...
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