[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` #20337

smorel394 · 2024-12-30T11:56:46Z

Provide instances that say that Adjunction.CommShift holds for the identity adjunction and is stable by composition, as well as similar instances for Equivalence.CommShift.

depends on: [Merged by Bors] - chore(CategoryTheory/Shift): fix NatTrans.CommShift #20364
depends on: [Merged by Bors] - chore(CategoryTheory/Adjunction.Basic, CategoryTheory/Equivalence): change definition of Adjunction.comp and Equivalence.trans #20490

github-actions · 2024-12-30T11:57:40Z

PR summary 2ca1840fb4

Import changes for modified files

No significant changes to the import graph

Import changes for all files

Files	Import difference

Declarations diff

+ commShiftIso_hom_app_counit_app_shift
+ commShiftIso_inv_app_counit_app
+ instComp
+ instId
+ instance : (E.trans E').CommShift A
+ instance : (E.trans E').functor.CommShift A := by
+ instance : (E.trans E').inverse.CommShift A := by
+ instance : (Equivalence.refl (C := C)).CommShift A := by
+ instance : (Equivalence.refl (C := C)).functor.CommShift A := by
+ instance : (Equivalence.refl (C := C)).inverse.CommShift A := by
+ unit_app_commShiftIso_hom_app
+ unit_app_shift_commShiftIso_inv_app

You can run this locally as follows

## summary with just the declaration names:
./scripts/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/declarations_diff.sh long <optional_commit>

The doc-module for script/declarations_diff.sh contains some details about this script.

No changes to technical debt.

You can run this locally as

./scripts/technical-debt-metrics.sh pr_summary

The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).

Mathlib/CategoryTheory/Shift/Adjunction.lean

…r-community/mathlib4 into SM.adjunctionCommShift

Mathlib/CategoryTheory/Shift/Adjunction.lean

Co-authored-by: Joël Riou <[email protected]>

Mathlib/CategoryTheory/Shift/Adjunction.lean

Co-authored-by: Joël Riou <[email protected]>

Mathlib/CategoryTheory/Shift/Adjunction.lean

Mathlib/CategoryTheory/Adjunction/Basic.lean

Co-authored-by: Joël Riou <[email protected]>

mathlib4-dependent-issues-bot · 2025-01-05T14:20:28Z

This PR/issue depends on:

~~[Merged by Bors] - chore(CategoryTheory/Shift): fix NatTrans.CommShift #20364~~
~~[Merged by Bors] - chore(CategoryTheory/Adjunction.Basic, CategoryTheory/Equivalence): change definition of Adjunction.comp and Equivalence.trans #20490~~
By Dependent Issues (🤖). Happy coding!

joelriou · 2025-01-06T13:00:58Z

Thanks!

bors merge

joelriou · 2025-01-06T13:02:01Z

bors cancel

mathlib-bors · 2025-01-06T13:02:04Z

Canceled.

Mathlib/CategoryTheory/Shift/Adjunction.lean

joelriou · 2025-01-06T13:11:58Z

bors merge

…Shift` (#20337) Provide instances that say that `Adjunction.CommShift` holds for the identity adjunction and is stable by composition, as well as similar instances for `Equivalence.CommShift`. - [ ] depends on: #20364 - [ ] depends on: #20490 Co-authored-by: Joël Riou <[email protected]> Co-authored-by: smorel394 <[email protected]>

mathlib-bors · 2025-01-06T13:23:05Z

Pull request successfully merged into master.

Build succeeded:

* 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) ...

…triangulated functor is triangulated (#20255) If a functor `F : C ⥤ D` between pretriangulated categories is triangulated, and if we have an adjunction `F ⊣ G`, then `G` is also a triangulated functor. We deduce that, if `E : C ≌ D` is an equivalence of pretriangulated categories, then `E.functor` is triangulated if and only if `E.inverse` is triangulated. TODO: The case of left adjoints. - [x] depends on: #20083 [the adjoint of an additive functor is additive] - [ ] depends on: #20337 Co-authored-by: smorel394 <[email protected]>

morel added 2 commits December 30, 2024 12:53

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[Merged by Bors] - feat(CategoryTheory/Triangulated/Adjunction): the right adjoint of a triangulated functor is triangulated #20255

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[Merged by Bors] - feat(CategoryTheory): 2-squares of functors #22248

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[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` #20337

[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` #20337

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Declarations diff

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mathlib-bors bot commented Jan 6, 2025

[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of Adjunction.CommShift #20337

[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of Adjunction.CommShift #20337

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smorel394 commented Dec 30, 2024 • edited Loading

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PR summary 2ca1840fb4

Import changes for modified files

Declarations diff

mathlib4-dependent-issues-bot commented Jan 5, 2025

joelriou commented Jan 6, 2025

joelriou commented Jan 6, 2025

mathlib-bors bot commented Jan 6, 2025

joelriou commented Jan 6, 2025

mathlib-bors bot commented Jan 6, 2025

[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` #20337

[Merged by Bors] - feat(CategoryTheory/Shift/Adjunction): properties of `Adjunction.CommShift` #20337

smorel394 commented Dec 30, 2024 •

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