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Theorems · Theorem · category theory

CategoryTheory.Limits.kernel.condition

∀ {C : Type u} [inst : CategoryTheory.Category.{v, u} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C] {X Y : C}
  (f : X ⟶ Y) [inst_2 : CategoryTheory.Limits.HasKernel f],
  CategoryTheory.CategoryStruct.comp (CategoryTheory.Limits.kernel.ι f) f = 0
Defined in
Mathlib.CategoryTheory.Limits.Shapes.Kernels
Cited by
52 results in Mathlib
Foundations
Depth 28 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CategoryTheory.CategoryCategoryTheory.Limits.HasZeroMorphismsCategoryTheory.Limits.HasKernel

Around this declaration

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

CategoryTheory.Limits.kernelIsKernel · cited by 24Limits.kernelIsKernelCategoryTheory.Abelian.factorThruCoimage · cited by 12Abelian.factorThruCoimageCategoryTheory.Limits.kernelSubobject_arrow_comp · cited by 5Limits.kernelSubobject_ar…CategoryTheory.Functor.preservesFiniteLimits_tfae · cited by 5Functor.preservesFiniteLi…CategoryTheory.ObjectProperty.SerreClassLocalization.preservesKernel · cited by 3SerreClassLocalization.pr…CategoryTheory.Abelian.comp_coimage_π_eq_zero · cited by 3Abelian.comp_coimage_π_eq…CategoryTheory.Abelian.epiWithInjectiveKernel_iff · cited by 3Abelian.epiWithInjectiveK…CategoryTheory.Limits.isLimitOfHasKernelOfPreservesLimit · cited by 3Limits.isLimitOfHasKernel…CategoryTheory.Functor.reflects_exact_of_faithful · cited by 3Functor.reflects_exact_of…CategoryTheory.Functor.preservesHomology_of_map_exact · cited by 2Functor.preservesHomology…CategoryTheory.Abelian.isoModSerre_kernel_eq_inverseImage_isomorphisms · cited by 2Abelian.isoModSerre_kerne…CategoryTheory.ShortComplex.exact_iff_exact_coimage_π · cited by 2ShortComplex.exact_iff_ex…CategoryTheory.Limits.kernelComparison_comp_kernel_map · cited by 2Limits.kernelComparison_c…ModuleCat.localizedModule_hasProjectiveDimensionLE · cited by 2ModuleCat.localizedModule…SheafOfModules.Presentation.mapRelations_mapGenerators · cited by 2Presentation.mapRelations…CategoryTheory.Category · cited by 32673CategoryTheory.CategoryQuiver.Hom · cited by 32603Quiver.HomCategoryTheory.CategoryStruct.comp · cited by 17999CategoryStruct.compCategoryTheory.Limits.HasZeroMorphisms · cited by 3275Limits.HasZeroMorphismsCategoryTheory.Limits.parallelPair · cited by 766Limits.parallelPairCategoryTheory.Limits.kernel · cited by 272Limits.kernelCategoryTheory.Limits.kernel.ι · cited by 214kernel.ιCategoryTheory.Limits.HasKernel · cited by 169Limits.HasKernelCategoryTheory.Limits.limit.cone · cited by 97limit.coneCategoryTheory.Limits.KernelFork.condition · cited by 7KernelFork.conditionkernel.conditionCITED BYCITES

Cites10

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Cited by56

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