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Mathlib.CategoryTheory.Presentable.IsDiscrete

Presentable objects in discrete categories #

The purpose of this file is to show that a category with a single object and a single morphism is locally presentable.

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@[instance 100]
instance CategoryTheory.IsDiscrete.isCardinalPresentable {C : Type u_1} [Category.{v_1, u_1} C] [IsDiscrete C] (X : C) (κ : Cardinal.{w}) [Fact κ.IsRegular] :
IsCardinalPresentable X κ
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@[instance 100]
instance CategoryTheory.IsDiscrete.isCardinalAccessible {C : Type u_1} [Category.{v_1, u_1} C] [IsDiscrete C] {D : Type u_2} [Category.{v_2, u_2} D] (F : Functor C D) (κ : Cardinal.{w}) [Fact κ.IsRegular] :
F.IsCardinalAccessible κ
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@[instance 100]
instance CategoryTheory.IsDiscrete.instIsCardinalLocallyPresentableOfSubsingletonOfNonempty {C : Type u_1} [Category.{v_1, u_1} C] [IsDiscrete C] (κ : Cardinal.{w}) [Fact κ.IsRegular] [Subsingleton C] [Nonempty C] :
IsCardinalLocallyPresentable C κ