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CostructuredArrow (Functor.diag _) X ≌ CostructuredArrow (Over.forget X.2) X.1 := (ofDiagEquivalence X).trans <| (ofCostructuredArrowProjEquivalence (𝟭 T) X.1 X.2).trans <| CostructuredArrow.mapNatIso (Over.forget X.2).rightUnitor section CommaFst variable {C : Type u₃} [Category.{v₃} C] (F : C ⥤ T) (G : D...
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/- Copyright (c) 2024 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang -/ module public import Mathlib.Tactic.CategoryTheory.Reassoc public import Mathlib.CategoryTheory.Comma.Over.Basic /-! # Typeclasses for `S`-objects and `S`-morphisms **Wa...
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/- Copyright (c) 2021 Bhavik Mehta. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Bhavik Mehta, Andrew Yang -/ module public import Mathlib.CategoryTheory.Adjunction.FullyFaithful public import Mathlib.CategoryTheory.Adjunction.Mates public import Mathlib.CategoryThe...
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/- Copyright (c) 2024 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Comma.Presheaf.Basic public import Mathlib.CategoryTheory.Limits.Preserves.Yoneda public import Mathlib.CategoryTheory.Limi...
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/- Copyright (c) 2024 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.HomCongr public import Mathlib.CategoryTheory.Comma.Over.Basic public import Mathlib.Tactic.CategoryTheory.Elementwise /-!...
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(s : CostructuredArrow yoneda A) : counitBackward F s ∘ counitForward F s = id := funext fun x => by simp [counitBackward] /-- Intermediate stage of assembling the counit. -/ @[simps] def counitAuxAux (F : (CostructuredArrow yoneda A)ᵒᵖ ⥤ Type v) (s : CostructuredArrow yoneda A) : F.obj (op s) ≅ OverArrows (...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.ExtensiveTopology public import Mathlib.CategoryTheory.Sites.Coherent.SheafComparison public import Ma...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.Comparison public import Mathlib.CategoryTheory.Sites.Coherent.ExtensiveSheaves public import Mathlib....
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Preadditive.Biproducts public import Mathlib.CategoryTheory.Sites.Coherent.ExtensiveSheaves public import Mathlib.Cat...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Functor.OfSequence public import Mathlib.CategoryTheory.Sites.Coherent.LocallySurjective public import Mathlib.Catego...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.EffectiveEpi.Enough public import Mathlib.CategoryTheory.EffectiveEpi.Preserves public import Mathlib.CategoryTheory....
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/- Copyright (c) 2023 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Adam Topaz, Nikolas Kuhn -/ module public import Mathlib.CategoryTheory.Sites.Coherent.CoherentSheaves public import Mathlib.Data.Finite.Sigma /-! # Description of the covering sieves of...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.EffectiveEpi.Enough public import Mathlib.CategoryTheory.EffectiveEpi.Preserves public import Mathlib.CategoryTheory....
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/- Copyright (c) 2023 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Adam Topaz, Dagur Asgeirsson, Filippo A. E. Nuccio, Riccardo Brasca -/ module public import Mathlib.CategoryTheory.Extensive public import Mathlib.CategoryTheory.Sites.Coverage public imp...
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/- Copyright (c) 2023 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson, Filippo A. E. Nuccio, Riccardo Brasca -/ module public import Mathlib.CategoryTheory.Limits.Preserves.Finite public import Mathlib.CategoryTheory.Sites.Canonical p...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.Basic public import Mathlib.Data.Finite.Sigma /-! # Description of the covering sieves of the extensi...
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/- Copyright (c) 2023 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Adam Topaz -/ module public import Mathlib.CategoryTheory.Sites.Canonical public import Mathlib.CategoryTheory.Sites.Coherent.Basic public import Mathlib.CategoryTheory.Sites.EffectiveEpi...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.SheafComparison public import Mathlib.CategoryTheory.Sites.Equivalence /-! # Coherence and equivalenc...
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/- Copyright (c) 2023 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson, Filippo A. E. Nuccio, Riccardo Brasca -/ module public import Mathlib.CategoryTheory.EffectiveEpi.Preserves public import Mathlib.CategoryTheory.Limits.Final.Paral...
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/- Copyright (c) 2023 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.Basic public import Mathlib.CategoryTheory.EffectiveEpi.Comp public import Mathlib.CategoryTheory.Effe...
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/- Copyright (c) 2023 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Sites.Coherent.RegularSheaves /-! # Description of the covering sieves of the regular topology This file characteri...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Point.Basic /-! # The category of points of a site We define the category structure on the points of a site `(C, J)`: a mor...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.CoverPreserving public import Mathlib.CategoryTheory.Sites.Point.Skyscraper public import Mathlib.CategoryT...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Localization.Monoidal.Functor public import Mathlib.CategoryTheory.Monoidal.Limits.Colimits public import Mathlib.CategoryTheory.Si...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Point.Conservative /-! # Points of presheaf toposes Let `C` be a category. For the Grothendieck topology `⊥` on `C`, we kno...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.ShrinkYoneda public import Mathlib.CategoryTheory.Sites.CoverLifting public import Mathlib.CategoryTheory.Sites.Point.Basic /-! # ...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Filtered.FinallySmall public import Mathlib.CategoryTheory.Functor.TypeValuedFlat public import Mathlib.CategoryTheory.Comma.Struct...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.ShrinkYoneda public import Mathlib.CategoryTheory.Sites.CoverLifting public import Mathlib.CategoryTheory.Sites.Point.OfIsCofiltere...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Types public import Mathlib.CategoryTheory.Filtered.FinallySmall public import Mathlib.CategoryTheory.Li...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Brian Nugent -/ module public import Mathlib.CategoryTheory.Sites.Point.Basic /-! # Skyscraper sheaves Let `Φ` be a point of a site `(C, J)`. In this file, we construct the sk...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Point.Conservative public import Mathlib.CategoryTheory.Sites.Point.Monoidal /-! # Monoidal structure on sheaves using enoug...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Point.Category public import Mathlib.CategoryTheory.Sites.Point.Skyscraper public import Mathlib.CategoryTheory.Abelian.Groth...
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/- Copyright (c) 2021 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang, Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Sheaf public import Mathlib.CategoryTheory.Sites.CoverLifting public import Mathlib.CategoryTheory.Sites.Cover...
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lemma equalizer_mem {U V} (f₁ f₂ : U ⟶ V) (e : G.map f₁ = G.map f₂) : Sieve.equalizer f₁ f₂ ∈ J _ := letI := IsDenseSubsite.isLocallyFaithful J K G IsDenseSubsite.functorPushforward_mem_iff.mp (G.functorPushforward_equalizer_mem K f₁ f₂ e) variable {J} (F : Sheaf J A) lemma map_eq_of_eq {X Y : C} (f₁ f₂ : X ⟶...
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/- Copyright (c) 2021 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang -/ module public import Mathlib.CategoryTheory.Sites.DenseSubsite.Basic /-! # The equivalence of categories of sheaves of a dense subsite If `G : C ⥤ D` exhibits `(C, J)` a...
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/- Copyright (c) 2021 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang -/ module public import Mathlib.CategoryTheory.Sites.DenseSubsite.SheafEquiv /-! # Induced Topology We say that a functor `G : C ⥤ (D, K)` is locally dense if for each cove...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.DenseSubsite.Basic /-! # Equivalence of categories of sheaves with a dense subsite that is 1-hypercover dense Let `F : C₀ ⥤...
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noncomputable def presheafMap {X Y : C} (f : X ⟶ Y) : presheafObj data G₀ Y ⟶ presheafObj data G₀ X := Multiequalizer.lift _ _ (fun i₀ ↦ restriction data G₀ ((data X).f i₀ ≫ f)) (by rintro ⟨⟨i₁, i₂⟩, j⟩ obtain ⟨a, h₁, h₂⟩ : ∃ a, a = F.map ((data X).p₁ j) ≫ (data X).f i₁ ≫ f ∧ a = F.map ((data X).p...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Category.Grp.Abelian public import Mathlib.Algebra.Category.Grp.Adjunctions public import Mathlib.Algebra.Homology.DerivedCategory.Ext.Bas...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.AlgebraicTopology.AlternatingFaceMapComplex public import Mathlib.CategoryTheory.Limits.FormalCoproducts.Cech /-! # Cech cohomology Given a fami...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.ExactSequences public import Mathlib.Algebra.Category.Grp.Biproducts public import Mathlib.CategoryTheory.Sit...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Descent.IsPrestack /-! # Descent data In this file, given a pseudofunctor `F` from `LocallyDiscrete Cᵒᵖ` ...
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structure IsStackFor (R : Presieve S) : Prop where isEquivalence : (F.toDescentData (fun (f : R.category) ↦ f.obj.hom)).IsEquivalence variable {F} in lemma IsStackFor.isPrestackFor {R : Presieve S} (h : F.IsStackFor R) : F.IsPrestackFor R where nonempty_fullyFaithful := ⟨by rw [isStackFor_iff] at h ...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Descent.DescentData /-! # Stacks: effectiveness of descent Let `C` be a category with a Grothendieck topo...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Descent.IsStack /-! # Characterization of (pre)stacks for a precoverage Let `F : LocallyDiscrete Cᵒᵖ ⥤ᵖ Cat` be a pseudofun...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Bicategory.Functor.Cat public import Mathlib.CategoryTheory.Bicategory.LocallyDiscrete public import Mathlib.Cate...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Bicategory.Adjunction.Cat public import Mathlib.CategoryTheory.Bicategory.LocallyDiscrete public import Mathlib.C...
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Descent.DescentData public import Mathlib.CategoryTheory.Limits.Shapes.Pullback.ChosenPullback /-! # Desce...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Sites.Hypercover.One /-! # Characterization of sheaves using 1-hypercovers In this file, given a Grothendieck topology `J` on a c...
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/- Copyright (c) 2025 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Hypercover.Homotopy public import Mathlib.CategoryTheory.Sites.Hypercover.SheafOfTypes public import Mathlib.Ca...
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/- Copyright (c) 2026 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Hypercover.One public import Mathlib.CategoryTheory.Limits.Types.Multiequalizer /-! # `1`-hypercovers and (pr...
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/- Copyright (c) 2025 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Hypercover.Zero /-! # Defining precoverages via pre-`0`-hypercovers A precoverage is a condition on all presi...
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/- Copyright (c) 2026 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Canonical public import Mathlib.CategoryTheory.Sites.Hypercover.SheafOfTypes public import Mathlib.CategoryTheo...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Limits.Shapes.Opposites.Products public import Mathlib.CategoryTheory.Sites.Coverage public import Mathlib.CategoryTheory.Sites.She...
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(F.congrIndexOneOfEqIso (congrFun hs₀.symm i) (congrFun hs₀.symm j) (g.s₁ k)).inv ≫ eqToHom (by rw [PreOneHypercover.congrIndexOneOfEq_congrFun hs₀ hs₁]) := by refine ⟨fun h ↦ ?_, fun ⟨hs₀, hh₀, hs₁, hh₁⟩ ↦ Hom.ext' hs₀ hh₀ hs₁ hh₁⟩ subst h simp [congrIndexOneOfEq] section variable (s₀ : E.I₀ ≃ F.I₀) ...
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/- Copyright (c) 2025 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Sites.Precoverage public import Mathlib.CategoryTheory.Limits.Shapes.Products /-! # 0-hypercovers Given a coverage ...
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ZeroHypercover.{max w w'} J T where __ := E.toPreZeroHypercover.inter F.toPreZeroHypercover mem₀ := by rw [PreZeroHypercover.inter_def, PreZeroHypercover.presieve₀_reindex] exact (E.bind (fun i ↦ F.pullback₁ (E.f i))).mem₀ /-- Replace the indexing type of a `0`-hypercover. -/ @[simps toPreZeroHypercover] d...
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/- Copyright (c) 2025 Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Christian Merten -/ module public import Mathlib.CategoryTheory.Quotient public import Mathlib.CategoryTheory.Sites.Hypercover.One public import Mathlib.CategoryTheory.Filtered.Basi...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Category.Grp.Basic /-! The cohomology of a sheaf of groups in degree 1 In this file, we shall define the cohomology in degree 1 of a she...
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/- Copyright (c) 2020 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel, Joël Riou -/ module public import Mathlib.Algebra.Homology.ExactSequence public import Mathlib.CategoryTheory.Abelian.Refinements /-! # The four and five lemmas Consid...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.ShortComplex.SnakeLemma /-! # Long exact sequence for the kernel and cokernel of a composition If `f : X ⟶ Y` and `g : Y ⟶ Z` a...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.Basic public import Mathlib.CategoryTheory.ObjectProperty.ContainsZero public import Mathlib.CategoryTheory.ObjectProperty....
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/- Copyright (c) 2026 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.SerreClass.MorphismProperty public import Mathlib.CategoryTheory.Localization.CalculusOfFractions.Preadditive public import...
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exact MorphismProperty.IsInvertedBy.of_comp _ _ (Localization.inverts L _) _ · refine ⟨⟨Localization.lift F.obj hF L, ?_⟩, ⟨ObjectProperty.isoMk _ (Localization.fac F.obj hF L)⟩⟩ rw [← exactFunctor_comp_iff L P] exact ObjectProperty.prop_of_iso _ (Localization.fac F.obj hF L).symm F.property end SerreC...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.SerreClass.MorphismProperty public import Mathlib.CategoryTheory.Localization.Bousfield /-! # Bousfield localizations with...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.SerreClass.Basic public import Mathlib.CategoryTheory.Abelian.CommSq public import Mathlib.CategoryTheory.Abelian.DiagramLe...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.Subobject public import Mathlib.CategoryTheory.Limits.FunctorCategory.EpiMono public import Mathlib.Ca...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.EnoughInjectives public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.EnoughInjectives /-! # Ex...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.CommSq public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.ColimCoyoneda public import Mathlib.CategoryTheory...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.EnoughInjectives public import Mathlib.CategoryTheory.Generator.Abelian /-! # Grothendieck ca...
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/- Copyright (c) 2024 Paul Reichert. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Paul Reichert -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Basic public import Mathlib.CategoryTheory.Abelian.Subobject public import Mathlib.CategoryTheor...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Colim public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.Basic public import Mathlib.Cate...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckCategory.Basic public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Colim public import Mathlib.Cate...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.FunctorCategory public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Types public imp...
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/- Copyright (c) 2023 Adam Topaz. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson, Isaac Hernando, Coleton Kotch, Adam Topaz -/ module public import Mathlib.Algebra.Homology.ShortComplex.ExactFunctor public import Mathlib.CategoryTheory.Abelian.Functor...
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section EpiMono open Functor section variable [HasZeroMorphisms C] [HasFiniteBiproducts C] noncomputable instance hasExactColimitsOfShape_discrete_finite (J : Type*) [Finite J] : HasExactColimitsOfShape (Discrete J) C where preservesFiniteLimits := preservesFiniteLimits_of_natIso HasBiproductsOfShape.colimIso...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson, Joël Riou -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.FunctorCategory public import Mathlib.CategoryTheory.Abelian.GrothendieckCatego...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Basic public import Mathlib.CategoryTheory.Limits.Connected public import Mathlib.CategoryTheory...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Limits.FilteredColimitCommutesFiniteLimit public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Basic /-! # The ...
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/- Copyright (c) 2024 Dagur Asgeirsson. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Dagur Asgeirsson -/ module public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Basic /-! # AB axioms in functor categories This file proves that, when the relevant lim...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.CategoryTheory.Filtered.Final public import Mathlib.CategoryTheory.Limits.Connected public import Mathlib.CategoryTheory.MorphismProperty.Limits p...
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/- Copyright (c) 2026 Blake Farman. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Blake Farman -/ module public import Mathlib.CategoryTheory.Abelian.Preradical.Basic public import Mathlib.CategoryTheory.Abelian.FunctorCategory public import Mathlib.Algebra.Homology....
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/- Copyright (c) 2026 Blake Farman. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Blake Farman -/ module public import Mathlib.CategoryTheory.Abelian.Basic public import Mathlib.CategoryTheory.Subobject.MonoOver public import Mathlib.CategoryTheory.Limits.FunctorCateg...
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/- Copyright (c) 2026 Blake Farman. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Blake Farman -/ module public import Mathlib.CategoryTheory.Abelian.Preradical.Basic public import Mathlib.CategoryTheory.Abelian.Preradical.Colon public import Mathlib.CategoryTheory.A...
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/- Copyright (c) 2022 Jakob von Raumer. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jakob von Raumer -/ module public import Mathlib.CategoryTheory.Abelian.Exact public import Mathlib.CategoryTheory.Preadditive.Yoneda.Projective public import Mathlib.CategoryTheory...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.TStructure public import Mathlib.Algebra.Homology.DerivedCategory.KProjective public import Mathlib.Algebra.H...
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/- Copyright (c) 2024 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou, Nailin Guan -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.EnoughInjectives public import Mathlib.Algebra.Homology.DerivedCategory.Ext.EnoughProjectives pu...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.Embedding.CochainComplex public import Mathlib.CategoryTheory.Preadditive.Projective.Resolution /-! # Projective resolutions as ...
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/- Copyright (c) 2022 Jujian Zhang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel, Kim Morrison, Jakob von Raumer, Joël Riou -/ module public import Mathlib.CategoryTheory.Preadditive.Projective.Resolution public import Mathlib.Algebra.Homology.Homotopy...
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/- Copyright (c) 2022 Jakob von Raumer. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jakob von Raumer -/ module public import Mathlib.CategoryTheory.Abelian.Exact public import Mathlib.CategoryTheory.Preadditive.Injective.Basic public import Mathlib.CategoryTheory.P...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.TStructure public import Mathlib.Algebra.Homology.DerivedCategory.KInjective public import Mathlib.Algebra.Ho...
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/- Copyright (c) 2025 Nailin Guan. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Nailin Guan -/ module public import Mathlib.Algebra.Homology.DerivedCategory.Ext.EnoughInjectives public import Mathlib.Algebra.Homology.DerivedCategory.Ext.EnoughProjectives public impo...
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/- Copyright (c) 2025 Joël Riou. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Joël Riou -/ module public import Mathlib.Algebra.Homology.Embedding.CochainComplex public import Mathlib.CategoryTheory.Preadditive.Injective.Resolution /-! # Injective resolutions as co...
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/- Copyright (c) 2022 Jujian Zhang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Jujian Zhang, Kim Morrison -/ module public import Mathlib.Algebra.Homology.HomotopyCategory public import Mathlib.Algebra.Homology.ShortComplex.ShortExact public import Mathlib.Categor...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.CategoryTheory.Abelian.Yoneda public import Mathlib.CategoryTheory.Generator.Abelian public import Mathlib.CategoryTheory.Abelian.Grothend...
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/- Copyright (c) 2025 Markus Himmel. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Markus Himmel -/ module public import Mathlib.Algebra.Category.ModuleCat.Injective public import Mathlib.CategoryTheory.Abelian.GrothendieckAxioms.Connected public import Mathlib.Categ...
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/- Copyright (c) 2025 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang -/ module public import Mathlib.Algebra.Category.Grp.Limits public import Mathlib.CategoryTheory.Monoidal.Cartesian.Mon_ public import Mathlib.CategoryTheory.Monoidal.Grp_ /...
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/- Copyright (c) 2025 Paul Lezeau. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Paul Lezeau -/ module public import Mathlib.CategoryTheory.Monoidal.Cartesian.Basic public import Mathlib.CategoryTheory.Monoidal.Mod_ /-! # Additional results about module objects in C...
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/- Copyright (c) 2026 Thomas Browning, Christian Merten. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Thomas Browning, Christian Merten -/ module public import Mathlib.Algebra.Group.Invertible.Basic public import Mathlib.CategoryTheory.Limits.Preserves.FunctorCatego...
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/- Copyright (c) 2025 Andrew Yang. All rights reserved. Released under Apache 2.0 license as described in the file LICENSE. Authors: Andrew Yang -/ module public import Mathlib.CategoryTheory.Adjunction.Limits public import Mathlib.CategoryTheory.Comma.Over.Pullback public import Mathlib.CategoryTheory.Limits.Construc...