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[Merged by Bors] - chore: deprecate MulRingNorm._ in favour of AbsoluteValue._#20557

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MS_fix_abvEquiv
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[Merged by Bors] - chore: deprecate MulRingNorm._ in favour of AbsoluteValue._#20557
MichaelStollBayreuth wants to merge 6 commits intomasterfrom
MS_fix_abvEquiv

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After refactoring the only customer of a number of declarations on MulRingNorms to AbsoluteValue instead, this now deprecates these declarations (some of which do not adhere to the naming conventions anyway).

It also adds text to the module docstring of Mathlib.Analysis.Normed.Ring.Seminorm and of MulRingNorm recommending to use AbsoluteValue instead. (Hence the documentation label. There is no label for deprecating/renaming things...)

We add the equivalence MulRingNorm R ≃ AbsoluteValue R ℝ and NormedField.toAbsoluteValue to match NormedField.toMulRingNorm.

Finally, it renames AbsoluteValue.Equiv to AbsoluteValue.IsEquiv (it is Prop-valued) etc. (Without deprecating the old names: they have been around for less than a week and are not used anywher by name; instead, Setoid notation is used downstream.)

See here on Zulip.


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@MichaelStollBayreuth MichaelStollBayreuth added documentation Improvements or additions to documentation awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. t-analysis Analysis (normed *, calculus) labels Jan 7, 2025
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github-actions bot commented Jan 7, 2025

PR summary 67c5ca9f49

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ IsEquiv
+ NormedField.toAbsoluteValue
+ eq_trivial_of_isEquiv_trivial
+ isEquiv_refl
+ isEquiv_symm
+ isEquiv_trans
+ mulRingNormEquivAbsoluteValue
+ mulRingNormEquivAbsoluteValue_apply
+ mulRingNormEquivAbsoluteValue_symm_apply
- Equiv
- eq_trivial_of_equiv_trivial
- equiv_refl
- equiv_symm
- equiv_trans

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.


Increase in tech debt: (relative, absolute) = (3.00, 0.03)
Current number Change Type
96 3 disabled deprecation lints

Current commit 67c5ca9f49
Reference commit 6bfeca124e

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).

@github-actions github-actions bot removed the awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. label Jan 7, 2025
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Thanks 🎉

bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Jan 7, 2025
mathlib-bors bot pushed a commit that referenced this pull request Jan 7, 2025
After refactoring the only customer of a number of declarations on `MulRingNorm`s to `AbsoluteValue` instead, this now deprecates these declarations (some of which do not adhere to the naming conventions anyway).

It also adds text to the module docstring of `Mathlib.Analysis.Normed.Ring.Seminorm` and of `MulRingNorm` recommending to use `AbsoluteValue` instead. (Hence the `documentation` label. There is no label for deprecating/renaming things...)

We add the equivalence `MulRingNorm R ≃ AbsoluteValue R ℝ` and `NormedField.toAbsoluteValue` to match `NormedField.toMulRingNorm`.

Finally, it renames `AbsoluteValue.Equiv` to `AbsoluteValue.IsEquiv` (it is `Prop`-valued) etc. (Without deprecating the old names: they have been around for less than a week and are not used anywher by name; instead, Setoid notation is used downstream.)

See [here](https://leanprover.zulipchat.com/#narrow/channel/287929-mathlib4/topic/MulRingNorm.20vs.2E.20AbsoluteValue/near/491324423) on Zulip.
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mathlib-bors bot commented Jan 7, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title chore: deprecate MulRingNorm._ in favour of AbsoluteValue._ [Merged by Bors] - chore: deprecate MulRingNorm._ in favour of AbsoluteValue._ Jan 7, 2025
@mathlib-bors mathlib-bors bot closed this Jan 7, 2025
@mathlib-bors mathlib-bors bot deleted the MS_fix_abvEquiv branch January 7, 2025 21:20
Julian added a commit that referenced this pull request Jan 8, 2025
* origin/master: (642 commits)
  feat: the Boolean subalgebra generated by the lattice generated by a set (#20440)
  feat: misc. lemmas about moments, tilted measures (#20150)
  chore(Algebra/Lie): make IsNilpotent and IsSolvable independent of scalars (#20556)
  feat(Combinatorics/SimpleGraph/Path): add `IsPath.getVert_injOn` (#19373)
  feat(Combinatorics/SimpleGraph): add lemmas about `spanningCoe` (#19377)
  chore: scope 'on' notation to Function (#20562)
  chore: disable docPrime linter (#20559)
  chore: deprecate MulRingNorm._ in favour of AbsoluteValue._ (#20557)
  fix(scripts/bench_summary): input jobID as a Nat, rather than a String (#20539)
  chore: move results about `DivisionMonoid` + `HasDistribNeg` (#20551)
  feat(NumberTheory/NumberField/Embeddings): definition of totally real field (#20542)
  chore(Noetherian/Artinian): generalize to Semiring (#20534)
  chore: protect `Filter.nhds_{iInf,inf}` (#20530)
  chore(AlgebraicTopology): move SplitSimplicialObject.lean (#20511)
  chore: extract 3 new files out of MeasureSpace (#20509)
  feat(RingTheory): Jacobian criterion for smoothness of local algebras (#20326)
  doc(RingTheory/Flat): add reference to Lambek's paper (#20266)
  feat(NumberTheory/AbelSummation): add more results (#19942)
  chore(Multilinear/Basic): generalize the `SMul` instance (#20536)
  feat(FDeriv/Equiv): generalize `HasFDerivAt.of_local_left_inverse` (#20516)
  feat(ContDiff): add `iteratedFDeriv_comp` (#20472)
  feat(LowerUpperTopology): add lemmas (#20465)
  feat(ContDiff): weaken some assumptions (#20368)
  fix(scripts/technical-debt-metric): avoid division by 0 (#20537)
  chore(Algebra/Ring): Clean up in SumsOfSquares and Semireal/Defs (#20528)
  feat(FTaylorSeries): add lemmas about `dist` between 0th and 1st derivs (#20089)
  feat: results on inner regularity of finite measures (#19780)
  chore: to_additive various results on groups, group actions (#20547)
  feat(Probability/Kernel): `Kernel.sectL` and `sectR` (#15466)
  chore(CategoryTheory/Limits/Fubini): relax universes constraints and weaken hypotheses (#20553)
  perf: remove `@[simp]` on `Fintype.card_of{IsEmpty,Subsingleton}` (#20524)
  fix(HashCommandLinter): remove unnecessary, broken workaround for tests (#20529)
  chore(Ideal/Basic): dependent generalization of `Ideal.pi` (#20535)
  feat(RingTheory): being unramified is a local property (#20323)
  chore(BooleanSubalgebra): use `IsSublattice` in `closure_sdiff_sup_induction` (#20439)
  feat(Order/SuccPred/CompleteLinearOrder): `⨆ a < x, succ a = x` (#19970)
  chore(*): replace `no_index (ofNat n)` with `ofNat(n)` everywhere (#20521)
  feat(CategoryTheory/Triangulated/Adjunction): the right adjoint of a triangulated functor is triangulated (#20255)
  chore(Order/SuccPred/LinearLocallyFinite): change data-creating instances to defs (#20235)
  chore: don't import algebra in `Data.Finset.Basic` (#19779)
  feat: initial segment commutes with `Iio` (#20503)
  chore(Measure/Pi): move parts to `MeasurableSpace/` (#20215)
  chore: smile more often (#20436)
  chore(Algebra/Category/MonCat/ForgetCorepresentable, Algebra/Group/Equiv/Basic): move definitions and add symmetric version (#20416)
  feat(GroupTheory/QuotientGroup): group correspondence theorem (#20007)
  doc: change "module homomorphism" to "linear map" (#20481)
  perf: improves the performance of the `Repr (Equiv.Perm α)` instance (1/4) (#20519)
  fix: do not keep only the first line of hints (#19756)
  feat(Analysis/Analytic): lemmas about `smul` for power series (#19816)
  chore: don't import algebra in `Data.Multiset.Basic` (#19775)
  ...
Julian added a commit that referenced this pull request Jan 8, 2025
* origin/master: (80 commits)
  chore(CategoryTheory): remove data produced by tactic block (#20565)
  feat: `|∫ a, f a ∂μ| ≤ ∫ a, |f a| ∂μ` (#20540)
  feat: the Boolean subalgebra generated by the lattice generated by a set (#20440)
  feat: misc. lemmas about moments, tilted measures (#20150)
  chore(Algebra/Lie): make IsNilpotent and IsSolvable independent of scalars (#20556)
  feat(Combinatorics/SimpleGraph/Path): add `IsPath.getVert_injOn` (#19373)
  feat(Combinatorics/SimpleGraph): add lemmas about `spanningCoe` (#19377)
  chore: scope 'on' notation to Function (#20562)
  chore: disable docPrime linter (#20559)
  chore: deprecate MulRingNorm._ in favour of AbsoluteValue._ (#20557)
  fix(scripts/bench_summary): input jobID as a Nat, rather than a String (#20539)
  chore: move results about `DivisionMonoid` + `HasDistribNeg` (#20551)
  feat(NumberTheory/NumberField/Embeddings): definition of totally real field (#20542)
  chore(Noetherian/Artinian): generalize to Semiring (#20534)
  chore: protect `Filter.nhds_{iInf,inf}` (#20530)
  chore(AlgebraicTopology): move SplitSimplicialObject.lean (#20511)
  chore: extract 3 new files out of MeasureSpace (#20509)
  feat(RingTheory): Jacobian criterion for smoothness of local algebras (#20326)
  doc(RingTheory/Flat): add reference to Lambek's paper (#20266)
  feat(NumberTheory/AbelSummation): add more results (#19942)
  chore(Multilinear/Basic): generalize the `SMul` instance (#20536)
  feat(FDeriv/Equiv): generalize `HasFDerivAt.of_local_left_inverse` (#20516)
  feat(ContDiff): add `iteratedFDeriv_comp` (#20472)
  feat(LowerUpperTopology): add lemmas (#20465)
  feat(ContDiff): weaken some assumptions (#20368)
  fix(scripts/technical-debt-metric): avoid division by 0 (#20537)
  chore(Algebra/Ring): Clean up in SumsOfSquares and Semireal/Defs (#20528)
  feat(FTaylorSeries): add lemmas about `dist` between 0th and 1st derivs (#20089)
  feat: results on inner regularity of finite measures (#19780)
  chore: to_additive various results on groups, group actions (#20547)
  feat(Probability/Kernel): `Kernel.sectL` and `sectR` (#15466)
  chore(CategoryTheory/Limits/Fubini): relax universes constraints and weaken hypotheses (#20553)
  perf: remove `@[simp]` on `Fintype.card_of{IsEmpty,Subsingleton}` (#20524)
  fix(HashCommandLinter): remove unnecessary, broken workaround for tests (#20529)
  chore(Ideal/Basic): dependent generalization of `Ideal.pi` (#20535)
  feat(RingTheory): being unramified is a local property (#20323)
  chore(BooleanSubalgebra): use `IsSublattice` in `closure_sdiff_sup_induction` (#20439)
  feat(Order/SuccPred/CompleteLinearOrder): `⨆ a < x, succ a = x` (#19970)
  chore(*): replace `no_index (ofNat n)` with `ofNat(n)` everywhere (#20521)
  feat(CategoryTheory/Triangulated/Adjunction): the right adjoint of a triangulated functor is triangulated (#20255)
  chore(Order/SuccPred/LinearLocallyFinite): change data-creating instances to defs (#20235)
  chore: don't import algebra in `Data.Finset.Basic` (#19779)
  feat: initial segment commutes with `Iio` (#20503)
  chore(Measure/Pi): move parts to `MeasurableSpace/` (#20215)
  chore: smile more often (#20436)
  chore(Algebra/Category/MonCat/ForgetCorepresentable, Algebra/Group/Equiv/Basic): move definitions and add symmetric version (#20416)
  feat(GroupTheory/QuotientGroup): group correspondence theorem (#20007)
  doc: change "module homomorphism" to "linear map" (#20481)
  perf: improves the performance of the `Repr (Equiv.Perm α)` instance (1/4) (#20519)
  fix: do not keep only the first line of hints (#19756)
  ...
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