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Theorems · Inductive type · category theory

CategoryTheory.CoverPreserving

{C : Type u₁} →
  [inst : CategoryTheory.Category.{v₁, u₁} C] →
    {D : Type u₂} →
      [inst_1 : CategoryTheory.Category.{v₂, u₂} D] →
        CategoryTheory.GrothendieckTopology C →
          CategoryTheory.GrothendieckTopology D → CategoryTheory.Functor C D → Prop

A functor G : (C, J) ⥤ (D, K) between sites is cover-preserving if for all covering sieves R in C, R.functorPushforward G is a covering sieve in D.

Defined in
Mathlib.CategoryTheory.Sites.CoverPreserving
Cited by
32 results in Mathlib
Foundations
Depth 2 from the axioms · uses no axioms
Assumes
CategoryTheory.CategoryCategoryTheory.Category

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

CategoryTheory.CoverPreserving.cover_preserve · cited by 10CoverPreserving.cover_pre…CategoryTheory.Functor.isContinuous_of_coverPreserving · cited by 4Functor.isContinuous_of_c…CategoryTheory.Functor.coverPreserving_restrictedTopology · cited by 3Functor.coverPreserving_r…CategoryTheory.Functor.IsDenseSubsite.coverPreserving · cited by 3IsDenseSubsite.coverPrese…CategoryTheory.GrothendieckTopology.Point.comap · cited by 3Point.comapCategoryTheory.Adjunction.isCocontinuous_iff_coverPreserving · cited by 2Adjunction.isCocontinuous…CategoryTheory.GrothendieckTopology.Point.sheafFiberComapIso · cited by 2Point.sheafFiberComapIsoCategoryTheory.CoverPreserving.of_isContinuous · cited by 2CoverPreserving.of_isCont…IsOpenMap.coverPreserving · cited by 2IsOpenMap.coverPreservingCategoryTheory.GrothendieckTopology.Point.skyscraperSheafFunctorCompSheafPushforwardContinuous · cited by 2Point.skyscraperSheafFunc…CategoryTheory.GrothendieckTopology.WEqualsLocallyBijective.transport · cited by 1WEqualsLocallyBijective.t…CategoryTheory.Presheaf.isLocallyInjective_of_whisker · cited by 1Presheaf.isLocallyInjecti…CategoryTheory.Presheaf.isLocallyInjective_whisker_iff · cited by 1Presheaf.isLocallyInjecti…CategoryTheory.MorphismProperty.coverPreserving_comap_forget · cited by 1MorphismProperty.coverPre…CategoryTheory.Presheaf.isLocallySurjective_of_whisker · cited by 1Presheaf.isLocallySurject…CategoryTheory.Category · cited by 32673CategoryTheory.CategoryCategoryTheory.Functor · cited by 16252CategoryTheory.FunctorCategoryTheory.GrothendieckTopology · cited by 1415CategoryTheory.Grothendie…CategoryTheory.CoverPreservingCITED BYCITES

Cites3

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Cited by37

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