[Merged by Bors] - feat(Algebra): more on OrthogonalIdempotents#18195
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Whysoserioushah wants to merge 35 commits intomasterfrom
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[Merged by Bors] - feat(Algebra): more on OrthogonalIdempotents#18195Whysoserioushah wants to merge 35 commits intomasterfrom
OrthogonalIdempotents#18195Whysoserioushah wants to merge 35 commits intomasterfrom
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PR summary 63dcdd9437Import changes for modified filesNo significant changes to the import graph Import changes for all files
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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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jjaassoonn
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Wait I just noticed I deleted a review by Moritz on accident. I'm very sorry about that. This is the reconstructed review according to my mailbox.
Co-authored-by: Andrew Yang <36414270+erdOne@users.noreply.github.com>
…ts' into Primitive-Idempotents
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The PR looks good to me aside from some docstrings that I couldn't fully parse nor improve on.
But I think I have requested too many alterations to comfortably maintainer merge this and I'll wait for a third opinion.
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Co-authored-by: Kevin Buzzard <k.buzzard@imperial.ac.uk>
Co-authored-by: Kevin Buzzard <k.buzzard@imperial.ac.uk>
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Thanks a lot! bors d+ |
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Co-authored-by: Kevin Buzzard <k.buzzard@imperial.ac.uk>
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bors r+ |
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Pull request successfully merged into master. Build succeeded: |
OrthogonalIdempotentsOrthogonalIdempotents
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* origin/master: (133 commits) chore(1000): remove nonexistent fields (#20493) chore(CategoryTheory/Adjunction.Basic, CategoryTheory/Equivalence): change definition of `Adjunction.comp` and `Equivalence.trans` (#20490) feat(Asymptotics): add `Asymptotics.*.*Prod` lemmas (#20458) feat: a conditional kernel is almost everywhere a probability measure (#20430) feat: if `f` is a measurable group hom, then every point has a neighborhood `s` such that `f '' s` is bounded (#20304) feat: `Ico`, `Ioc`, and `Ioo` are not closed or compact (#20479) chore: drop redundant hypothesis in `Module.Dual.eq_of_preReflection_mapsTo` (#20492) feat(FaaDiBruno): derive `DecidableEq` (#20482) chore(SetTheory/Ordinal/Basic): `{x // x < y}` → `Iio y` (#20413) chore: generalize `FormalMultilinearSeries.ofScalars_norm` to `Seminormed` (#20351) chore(MvPolynomial/Localization): golf using TensorProduct (#20309) chore(Combinatorics/Enumerative/Partition): auto-derive DecidableEq (#20277) chore(CategoryTheory): make relevant parameters explicit in `Arrow.homMk`. (#20259) feat: add `IsStarNormal (↑x⁻¹ : R)` instance for `x : Rˣ` (#20091) fix: Stop cancelling builds of master (#20435) chore: update Mathlib dependencies 2025-01-05 (#20485) feat(SetTheory/Cardinal/Arithmetic): miscellaneous cardinality lemmas (#18933) chore: bump toolchain to v4.16.0-rc1, and merge bump/v4.16.0 (#20464) chore: bot validates lean-toolchain on bump/v4.X.0 branches (#20478) feat: shorthand lemmas for the L1 norm (#20383) chore: remove unnecessary adaptation notes (#20467) chore(Algebra/Category/MonCat/Colimits): remove smallness condition (#20473) chore(SetTheory/Ordinal/Arithmetic): `IsLeftCancelAdd Ordinal` (#19888) feat(Algebra): more on `OrthogonalIdempotents` (#18195) feat(Radical): `(radical a).natDegree ≤ a.natDegree` (#20468) feat(Polynomial): `(a^n)' = 0` iff `a' = 0` when `n` doesn't divide the characteristic (#20190) feat(Algebra/Lie): add Lie's theorem (#13480) chore(RingTheory/Generators): make algebra instance a def (#14265) feat(Topology/Group): Lemmas about profinite group (#20282) feat: the empty set is a topological basis iff the space is empty (#20441) chore: make uniqueness of conditionally complete linearly ordered archimedean fields independent of the construction of `Real` (#20242) chore: `inherit_doc`s for notations (#20376) chore: split AEEqOfIntegral into two files, one for each integral type (#20405) chore: split Kernel/MeasurableIntegral (#20427) feat(MeasureTheory/Group/Measure): add ContinuousMulEquiv.isHaarMeasure_map (#20469) fix(Mathlib.Tactic.CC.Datatypes): `cc` raises panic (#20422) feat(Probability/Moments): add lemmas about moment generating functions (#19886) feat(Algebra/Order/AddGroupWithTop): lemmas about LinearOrderedAddCommGroupWithTop (#18954) chore: bump toolchain to v4.15.0 (#20461) chore: update Mathlib dependencies 2025-01-04 (#20463) fix: make `Prod` projection delaborators respond to options, add option to disable (#20455) chore(Algebra): Improve attribute generation (#20451) feat(Polynomial): `(C a * p).degree = p.degree` if `a * p.leadingCoeff ≠ 0` (#20446) feat: add `ENNReal.finStronglyMeasurable_of_measurable` (#20404) doc(Algebra/Lie/Weights/Basic): fix typo (#20450) chore(1000): remove `identifiers` (#20445) feat: add sumPiEquivProdPi and piUnique (#20195) feat: add fst_compProd_apply (#20429) chore: use unsigned measures for Lebesgue decomposition (#20400) feat: Two lemmas on divisibility and coprimality of `expand` (#20143) ...
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* origin/master: (189 commits) chore(Algebra): make more names consistent (#20449) feat: Polynomial FLT (#18882) feat: A disjoint union is finite iff all sets are finite, and all but finitely many are empty (#20457) fix: linkfix in 100.yaml (#20517) feat(1000): fill in more entries (#20470) feat(Combinatorics/SimpleGraph/Walk): add `penultimate` and `snd` (#16769) feat(ContinuousMultilinearMap): add lemmas about `.prod` (#20462) feat(RingTheory): classification of etale algebras over fields (#20324) fix: Allow multiple builds on staging branch (#20515) feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` (#20337) chore(Data/Multiset/Basic): move the `sub`, `union`, `inter` sections lower (#19863) chore(Topology/UniformSpace/Completion): make coe' argument implicit (#20514) refactor(Algebra/Category/Grp/Colimits): change the construction of colimits in `AddCommGrp` (#20474) feat(Topology/Algebra/InfiniteSum/NatInt): Add pnat lems (#16544) chore(RingTheory/Finiteness): rename Module.Finite.out (#20506) refactor(CategoryTheory/Limits/Preserves/Ulift): simplify the proof that the universe lifting functor for types preserves all colimits (#20508) feat(CategoryTheory): products in the category of Ind-objects (#20507) chore: remove >9 month old deprecations (#20505) chore(FieldTheory/Galois): small cleanup (#20217) chore(LinearIndependent): generalize to semirings (#20480) chore(NumberTheory/NumberField/AdeleRing): refactor adele rings (#20500) chore: replace `aesop` with `simp` where possible (#20483) chore(1000): remove nonexistent fields (#20493) chore(CategoryTheory/Adjunction.Basic, CategoryTheory/Equivalence): change definition of `Adjunction.comp` and `Equivalence.trans` (#20490) feat(Asymptotics): add `Asymptotics.*.*Prod` lemmas (#20458) feat: a conditional kernel is almost everywhere a probability measure (#20430) feat: if `f` is a measurable group hom, then every point has a neighborhood `s` such that `f '' s` is bounded (#20304) feat: `Ico`, `Ioc`, and `Ioo` are not closed or compact (#20479) chore: drop redundant hypothesis in `Module.Dual.eq_of_preReflection_mapsTo` (#20492) feat(FaaDiBruno): derive `DecidableEq` (#20482) chore(SetTheory/Ordinal/Basic): `{x // x < y}` → `Iio y` (#20413) chore: generalize `FormalMultilinearSeries.ofScalars_norm` to `Seminormed` (#20351) chore(MvPolynomial/Localization): golf using TensorProduct (#20309) chore(Combinatorics/Enumerative/Partition): auto-derive DecidableEq (#20277) chore(CategoryTheory): make relevant parameters explicit in `Arrow.homMk`. (#20259) feat: add `IsStarNormal (↑x⁻¹ : R)` instance for `x : Rˣ` (#20091) fix: Stop cancelling builds of master (#20435) chore: update Mathlib dependencies 2025-01-05 (#20485) feat(SetTheory/Cardinal/Arithmetic): miscellaneous cardinality lemmas (#18933) chore: bump toolchain to v4.16.0-rc1, and merge bump/v4.16.0 (#20464) chore: bot validates lean-toolchain on bump/v4.X.0 branches (#20478) feat: shorthand lemmas for the L1 norm (#20383) chore: remove unnecessary adaptation notes (#20467) chore(Algebra/Category/MonCat/Colimits): remove smallness condition (#20473) chore(SetTheory/Ordinal/Arithmetic): `IsLeftCancelAdd Ordinal` (#19888) feat(Algebra): more on `OrthogonalIdempotents` (#18195) feat(Radical): `(radical a).natDegree ≤ a.natDegree` (#20468) feat(Polynomial): `(a^n)' = 0` iff `a' = 0` when `n` doesn't divide the characteristic (#20190) feat(Algebra/Lie): add Lie's theorem (#13480) chore(RingTheory/Generators): make algebra instance a def (#14265) ...
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| theorem completeOrthogonalIdempotents_idempotent [Fintype I]: | ||
| CompleteOrthogonalIdempotents fun i ↦ idempotent V i where |
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You might be interested in reviewing #20531, which goes the other way around.
I think this is generalizable to semirings too :)
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Co-authored-by : @jjaassoonn