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[Merged by Bors] - feat(Algebra/Homology/Embedding): the morphism from a complex to its truncGE truncation#19544

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[Merged by Bors] - feat(Algebra/Homology/Embedding): the morphism from a complex to its truncGE truncation#19544
joelriou wants to merge 16 commits intomasterfrom
algebra-homology-embedding-truncge-3

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@joelriou joelriou commented Nov 27, 2024

Given an embedding e of complex shapes which satisfies e.IsTruncGE, we define the canonical (natural) epimorphism K.πTruncGE e : K ⟶ K.truncGE e from a complex to its canonical truncation.


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@joelriou joelriou added WIP Work in progress t-category-theory Category theory labels Nov 27, 2024
@github-actions github-actions bot added the large-import Automatically added label for PRs with a significant increase in transitive imports label Nov 27, 2024
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github-actions bot commented Nov 27, 2024

PR summary 516e3cf396

Import changes for modified files

Dependency changes

File Base Count Head Count Change
Mathlib.Algebra.Homology.Embedding.TruncGE 983 985 +2 (+0.20%)
Import changes for all files
Files Import difference
Mathlib.Algebra.Homology.Embedding.TruncGE 2

Declarations diff

+ comm
+ epi
+ f
+ f_eq_iso_hom_iso_inv
+ f_eq_iso_hom_pOpcycles_iso_inv
+ homRestrict_comp_extendMap
+ instance (i : ι) : Epi ((K.restrictionToTruncGE' e).f i) := by
+ instance (i' : ι') : Epi ((K.πTruncGE e).f i') := by
+ instance : (K.truncGE e).IsStrictlySupported e := by
+ instance : Epi (K.πTruncGE e) := epi_of_epi_f _ (fun _ => inferInstance)
+ instance [K.IsStrictlySupported e] (i : ι) :
+ instance [K.IsStrictlySupported e] : IsIso (K.πTruncGE e) := by
+ instance {ι'' : Type*} {c'' : ComplexShape ι''} (e' : c''.Embedding c')
+ isIso_restrictionToTruncGE'
+ mono
+ restrictionToTruncGE'
+ restrictionToTruncGE'NatTrans
+ restrictionToTruncGE'_f_eq_iso_hom_iso_inv
+ restrictionToTruncGE'_f_eq_iso_hom_pOpcycles_iso_inv
+ restrictionToTruncGE'_hasLift
+ restrictionToTruncGE'_naturality
+ πTruncGE
+ πTruncGENatTrans
+ πTruncGE_naturality

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).

@mathlib4-dependent-issues-bot mathlib4-dependent-issues-bot added the blocked-by-other-PR This PR depends on another PR (this label is automatically managed by a bot) label Nov 27, 2024
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@joelriou joelriou added large-import Automatically added label for PRs with a significant increase in transitive imports and removed WIP Work in progress labels Nov 30, 2024
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@joelriou joelriou removed the WIP Work in progress label Dec 24, 2024
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kim-em commented Jan 16, 2025

bors merge

@ghost ghost added the ready-to-merge This PR has been sent to bors. label Jan 16, 2025
mathlib-bors bot pushed a commit that referenced this pull request Jan 16, 2025
…`truncGE` truncation (#19544)

Given an embedding `e` of complex shapes which satisfies `e.IsTruncGE`, we define the canonical (natural) epimorphism `K.πTruncGE e : K ⟶ K.truncGE e` from a complex to its canonical truncation.
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mathlib-bors bot commented Jan 16, 2025

Pull request successfully merged into master.

Build succeeded:

@mathlib-bors mathlib-bors bot changed the title feat(Algebra/Homology/Embedding): the morphism from a complex to its truncGE truncation [Merged by Bors] - feat(Algebra/Homology/Embedding): the morphism from a complex to its truncGE truncation Jan 16, 2025
@mathlib-bors mathlib-bors bot closed this Jan 16, 2025
@mathlib-bors mathlib-bors bot deleted the algebra-homology-embedding-truncge-3 branch January 16, 2025 22:24
mathlib-bors bot pushed a commit that referenced this pull request Jan 17, 2025
…19550)

We dualize for `truncLE` the definitions and lemmas obtained for `truncGE` in PR  #14734, #19543 and #19544.
Julian added a commit that referenced this pull request Jan 20, 2025
* polynomial-sequences: (149 commits)
  Aha, here's how to get Lean to stop showing S.elems' in the infoview.
  Try satisfying the linter gods again.
  Probably enough initial tidying to send the PR.
  Kill more temporary names.
  Touch more natDegree.
  Does protected satisfy the docstring linter?
  Bit shorter.
  More
  Quiet linters.
  Remove redundant imports.
  Copyright header and more twiddling.
  Rename lemma to 'degree_smul_of_leadingCoeff_rightRegular' and split out
  feat(Polynomial): polynomial sequences are bases for R[X]
  chore(Dynamics/PeriodicPts): don't import `MonoidWithZero` (#20765)
  chore(Associated): split out `Ring` results (#20737)
  feat(AlgebraicGeometry): flat morphisms of schemes (#19790)
  feat(AlgebraicGeometry): scheme-theoretic fibre (#19427)
  chore: split Mathlib.Analysis.Asymptotics.Asymptotics (#20785)
  doc: typo (#20829)
  feat(CategoryTheory): condition for an induced functor between comma categories to be final  (#20139)
  feat(1000.yaml): allow statements of theorems also (#20637)
  feat(Algebra/Homology/Embedding): homology of truncGE' (#19570)
  chore: cleanup many porting notes in Combinatorics (#20823)
  chore: eliminate porting notes about `deriving Fintype` (#20820)
  feat(Algebra/Lie): a Lie algebra is solvable iff it is solvable after faithfully flat base change (#20808)
  feat: define bases of root pairings (#20667)
  feat(Tactic): basic ConcreteCategory support for elementwise (#20811)
  feat(CategoryTheory): define unbundled `ConcreteCategory` class  (#20810)
  chore(CategoryTheory): rename `ConcreteCategory` to `HasForget` (#20809)
  feat: `CommSemiring (NonemptyInterval ℚ≥0)` (#20783)
  chore(yaml_check.py): re-format (#20807)
  feat: elementary estimate for Real.log (#20766)
  feat: definition of linear topologies (#14990)
  feat(RingTheory): flatness over a semiring (#19115)
  feat(Algebra/Homology/Embedding): the canonical truncation truncLE (#19550)
  feat(Algebra/Homology/Embedding): API for the homology of an extension of homological complex (#19203)
  feat(Algebra/Ring): `RingEquiv.piUnique` (#20794)
  feat(RingTheory/LocalRing): add instance `Unique (MaximalSpectrum R)` for a local ring `R` (#20801)
  chore(GroupExtension/Defs): define `Section` and redefine `Splitting` (#20802)
  chore: restore `def` to `adicCompletion` (#20796)
  refactor: rename `UniqueContinuousFunctionalCalculus` to `ContinuousMap.UniqueHom` (#20643)
  feat(Algebra/Homology/Embedding): the morphism from a complex to its `truncGE` truncation (#19544)
  chore(Mathlib/Computability/TuringMachine): split file (#20790)
  feat(Data/Finset/Card): add `InjOn` and `SurjOn` versions of finset cardinality lemmas (#20753)
  feat(Order/WellFoundedSet): add convenience constructors for IsWF and IsPWO for WellFoundedLT types (#20752)
  feat(Set/Finite): a set is finite if its image and fibers are finite (#20751)
  chore: cleanup .gitignore files (#20795)
  feat(Topology/Group/Profinite):  Profinite group is limit of finite group (#16992)
  feat(Combinatorics/SimpleGraph): vertices in cycles (#20602)
  CI: merge `bot_fix_style` actions (#20789)
  ...
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