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Theorems · Definition · category theory

CategoryTheory.ObjectProperty.IsDetecting

{C : Type u₁} → [inst : CategoryTheory.Category.{v₁, u₁} C] → CategoryTheory.ObjectProperty C → Prop

We say that P : ObjectProperty C is detecting if the functors C(G, -) for G : C such that P G collectively reflect isomorphisms, i.e., if any h with domain G that P G uniquely factors through f, then f is an isomorphism.

Defined in
Mathlib.CategoryTheory.Generator.Basic
Cited by
20 results in Mathlib
Foundations
Depth 3 from the axioms · uses no axioms
Assumes
CategoryTheory.Category

Around this declaration

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

CategoryTheory.IsDetector · cited by 15CategoryTheory.IsDetectorCategoryTheory.ObjectProperty.IsSeparating.isDetecting · cited by 4IsSeparating.isDetectingCategoryTheory.ObjectProperty.IsDetecting.isSeparating · cited by 3IsDetecting.isSeparatingCategoryTheory.ObjectProperty.isDetecting_op_iff · cited by 2ObjectProperty.isDetectin…CategoryTheory.wellPowered_of_isDetecting · cited by 2CategoryTheory.wellPowere…CategoryTheory.ObjectProperty.isCodetecting_op_iff · cited by 2ObjectProperty.isCodetect…CategoryTheory.ObjectProperty.isDetecting_unop_iff · cited by 1ObjectProperty.isDetectin…CategoryTheory.isCodetector_op_iff · cited by 1CategoryTheory.isCodetect…CategoryTheory.isCodetector_unop_iff · cited by 1CategoryTheory.isCodetect…CategoryTheory.ObjectProperty.IsDetecting.isIso_iff_of_mono · cited by 1IsDetecting.isIso_iff_of_…CategoryTheory.Subobject.inf_eq_of_isDetecting · cited by 1Subobject.inf_eq_of_isDet…CategoryTheory.Subobject.eq_of_isDetecting · cited by 1Subobject.eq_of_isDetecti…CategoryTheory.Subobject.eq_of_le_of_isDetecting · cited by 1Subobject.eq_of_le_of_isD…CategoryTheory.ObjectProperty.isCodetecting_unop_iff · cited by 1ObjectProperty.isCodetect…CategoryTheory.isDetector_op_iff · cited by 1CategoryTheory.isDetector…CategoryTheory.Category · cited by 32673CategoryTheory.CategoryQuiver.Hom · cited by 32603Quiver.HomCategoryTheory.CategoryStruct.comp · cited by 17999CategoryStruct.compCategoryTheory.IsIso · cited by 1156CategoryTheory.IsIsoCategoryTheory.ObjectProperty · cited by 798CategoryTheory.ObjectProp…ExistsUnique · cited by 268ExistsUniqueObjectProperty.IsDetectingCITED BYCITES

Cites6

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Cited by21

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