Theorems · Theorem · category theory
CategoryTheory.Functor.IsLeftKanExtension.nonempty_isUniversal
∀ {C : Type u_1} {H : Type u_3} {D : Type u_4} {inst : CategoryTheory.Category.{v_1, u_1} C}
{inst_1 : CategoryTheory.Category.{v_3, u_3} H} {inst_2 : CategoryTheory.Category.{v_4, u_4} D}
{F' : CategoryTheory.Functor D H} {L : CategoryTheory.Functor C D} {F : CategoryTheory.Functor C H}
{α : F ⟶ L.comp F'} [self : F'.IsLeftKanExtension α],
Nonempty (CategoryTheory.StructuredArrow.IsUniversal (CategoryTheory.Functor.LeftExtension.mk F' α))- Cited by
- 1 results in Mathlib
- Foundations
- Depth 29 from the axioms · uses propext, Classical.choice, Quot.sound
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites9
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- CategoryTheory.Categorystatement and proof · cited by 32,673
- Quiver.Homstatement and proof · cited by 32,603
- CategoryTheory.Functor.objstatement · cited by 19,642
- CategoryTheory.Functorstatement and proof · cited by 16,252
- CategoryTheory.Functor.compstatement and proof · cited by 6,529
- CategoryTheory.Functor.whiskeringLeftstatement · cited by 395
- CategoryTheory.Functor.IsLeftKanExtensionstatement and proof · cited by 57
- CategoryTheory.Functor.LeftExtension.mkstatement · cited by 31
- CategoryTheory.StructuredArrow.IsUniversalstatement · cited by 13
Cited by2
Results whose statement or proof uses this declaration.
- CategoryTheory.Functor.isUniversalOfIsLeftKanExtensionproof · cited by 7
- CategoryTheory.Functor.PreservesLeftKanExtension.mk'proof · cited by 1