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[Merged by Bors] - feat(Analysis/SpecialFunctions/Pow/Real): add some lemmas#20608

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MS_rpow_lemmas
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[Merged by Bors] - feat(Analysis/SpecialFunctions/Pow/Real): add some lemmas#20608
MichaelStollBayreuth wants to merge 2 commits intomasterfrom
MS_rpow_lemmas

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This adds a few lemmas on powers with real exponents:

  • injectivity as a function of the exponent (when the base is positive and ≠ 1)
  • (x ^ y) ^ n = (x ^ n) ^ y when y is real and n is a natural number or an integer

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@MichaelStollBayreuth MichaelStollBayreuth added awaiting-CI This PR does not pass CI yet. This label is automatically removed once it does. t-analysis Analysis (normed *, calculus) labels Jan 9, 2025
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github-actions bot commented Jan 9, 2025

PR summary 4fd955695f

Import changes for modified files

No significant changes to the import graph

Import changes for all files
Files Import difference

Declarations diff

+ rpow_pow_comm
+ rpow_right_inj
+ rpow_zpow_comm

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).

@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 9, 2025
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maintainer merge

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🚀 Pull request has been placed on the maintainer queue by Ruben-VandeVelde.

@github-actions github-actions bot added the maintainer-merge A reviewer has approved the changed; awaiting maintainer approval. label Jan 10, 2025
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bors r+

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Jan 10, 2025
mathlib-bors bot pushed a commit that referenced this pull request Jan 10, 2025
This adds a few lemmas on powers with real exponents:
* injectivity as a function of the exponent (when the base is positive and ≠ 1)
* `(x ^ y) ^ n = (x ^ n) ^ y` when `y` is real and `n` is a natural number or an integer
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mathlib-bors bot commented Jan 10, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(Analysis/SpecialFunctions/Pow/Real): add some lemmas [Merged by Bors] - feat(Analysis/SpecialFunctions/Pow/Real): add some lemmas Jan 10, 2025
@mathlib-bors mathlib-bors bot closed this Jan 10, 2025
@mathlib-bors mathlib-bors bot deleted the MS_rpow_lemmas branch January 10, 2025 14:01
grunweg pushed a commit that referenced this pull request Jan 11, 2025
This adds a few lemmas on powers with real exponents:
* injectivity as a function of the exponent (when the base is positive and ≠ 1)
* `(x ^ y) ^ n = (x ^ n) ^ y` when `y` is real and `n` is a natural number or an integer
Julian added a commit that referenced this pull request Jan 12, 2025
* origin/master: (88 commits)
  chore(scripts): update nolints.json (#20672)
  chore: de-simp `map_eq_zero_iff_eq_one` (#20662)
  feat(Combinatorics/SimpleGraph): add independent sets (#18608)
  chore(CategoryTheory/Limits/Cones): functoriality of `mapCone` (#20641)
  feat(Algebra/Category/ModuleCat): pullback of presheaves of modules (#17366)
  feat(AlgebraicTopology): model categories (#19158)
  chore(CategoryTheory): make NormalEpi/MonoCategory and RegularEpi/MonoCategory props (#19548)
  feat(Data/List/ReduceOption): add replicate theorems (#20644)
  feat: approximate subgroups (#20050)
  feat: use scoped trace nodes in linarith (#19855)
  feat: disjoint union of charted spaces (#20619)
  feat: add some term elaborators for reduction (#15192)
  feat(Topology/Category): category of delta-generated spaces (#19499)
  add a variable_alias for Quantale and AddQuantale (#19282)
  feat(Computability/DFA): implement `isRegular_iff` (#19940)
  chore: unpin and bump batteries and importgraph (#20651)
  chore: split `Mathlib/Algebra/Group/Int` (#20624)
  feat: three lemmas related to Hausdorff distance (#20585)
  chore: `initialize_simps_projections` for `Submodule` (#20582)
  feat(Order): Boolean algebra structure on idempotents (#20618)
  chore(CategoryTheory): moving/renaming Subpresheaf (#20583)
  refactor(IntermediateField/Adjoin): Split off relation to `Algebra.adjoin` (#20630)
  feat: sets of doubling strictly less than 3/2 (#20572)
  chore(TensorProduct): universe polymorphism in EquationalCriterion (#20452)
  feat: `s \ t ∩ u = (s ∩ u) \ t` (#20298)
  feat: product of subalgebras (#20202)
  feat: `Submodule.restrictScalars` commutes with `pow` (#20581)
  feat: `a ∈ s ^ n` iff there exists a sequence `f` of `n` elements of `s` such that `∏ i, f i = a` (#20580)
  chore: make `FooHom.coe_id` a `norm_cast` lemma (#20576)
  chore: use ofNat more (#20546)
  feat(CategoryTheory/Shift/Opposite and CategoryTheory/Shift/Pullback): `CommShift` structures on adjunctions are compatible with opposites and pullbacks (#20363)
  feat(FieldTheory/Differential/Liouville): prove the algebraic case of Liouville's theorem (#16797)
  refactor: remove the `CompactSpace` field from `Unique{NonUnital}ContinuousFunctionalCalculus` (#20590)
  feat: Make `PNat.recOn` induction eliminator (#20617)
  feat(Analysis/SpecialFunctions/Pow/Real): add some lemmas (#20608)
  feat: If `s ∆ t` is finite, then `s ∆ u` is finite iff `t ∆ u` is (#20574)
  feat: `⨅ i, f i ≤ ⨆ i, f i` (#20573)
  chore(Geometry/Manifold): move SmoothManifoldWithCorners.lean to IsManifold.lean (#20611)
  feat: AbsoluteValue.IsNontrivial (#20588)
  chore(Data/Finsupp): split off extensionality from `Defs.lean` (#19092)
  chore(Data/Set): split the `CoeSort` instance to its own file (#19031)
  feat(Algebra/Order/Archimedean/Basic): powers between two elements (#20612)
  feature(Algebra/Ring/Idempotents): product of an idempotent and its complement (#20286)
  chore: cleanup more `erw` (#20601)
  chore(GroupTheory/CoprodI): shorten proof of lift_word_prod_nontrivial_of_not_empty (#20587)
  chore: cleanup imports in PrimePow/Divisors (#20626)
  chore: split Algebra/BigOperators/Group/List (#20625)
  chore: reduce Topology->Order imports by moving content (#20627)
  chore(Algebra/Lie/DirectSum): shorten proof of lieAlgebraOf.map_lie' (#20592)
  refactor: Split `FieldTheory/Adjoin.lean` into `Defs.lean` and `Basic.lean` (#20333)
  ...
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4 participants