Theorems · Inductive type · category theory
CategoryTheory.IsCofiltered
(C : Type u) → [CategoryTheory.Category.{v, u} C] → PropA category IsCofiltered if
1. for every pair of objects there exists another object "to the left",
2. for every pair of parallel morphisms there exists a morphism to the left so the compositions
are equal, and
3. there exists some object.
- Defined in
- Mathlib.CategoryTheory.Filtered.Basic
- Cited by
- 133 results in Mathlib
- Foundations
- Depth 1 from the axioms, rests on 2 definitions · uses no axioms
- Assumes
- CategoryTheory.Category
Around this declaration
Dashed lines are statement dependencies; solid lines are citations in proofs.
Cites1
Mathlib declarations this one mentions in its statement or cites explicitly in its proof. Plumbing is filtered out.
- CategoryTheory.Categorystatement · cited by 32,673
Cited by181
Results whose statement or proof uses this declaration.
- CategoryTheory.IsCofiltered.of_equivalencestatement and proof · cited by 10
- CategoryTheory.IsCofiltered.nonemptystatement and proof · cited by 9
- AlgebraicGeometry.isLimitOpensConestatement and proof · cited by 8
- CategoryTheory.IsCofiltered.inf_objs_existsstatement and proof · cited by 7
- CategoryTheory.GrothendieckTopology.Point.ofIsCofilteredstatement and proof · cited by 7
- CategoryTheory.isCofiltered_of_isFiltered_opstatement · cited by 6
- CategoryTheory.IsCofiltered.inf_existsstatement and proof · cited by 6
- PresheafOfModules.ModuleColimit.homEquivstatement and proof · cited by 6
- AlgebraicGeometry.exists_map_eq_topstatement and proof · cited by 5
- CategoryTheory.GrothendieckTopology.Point.toPresheafFiberOfIsCofilteredstatement and proof · cited by 5
- PresheafOfModules.ModuleColimit.mapstatement and proof · cited by 5
- AlgebraicGeometry.ExistsHomHomCompEqCompAux.i'statement and proof · cited by 4