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Mathlib.CategoryTheory.LiftingProperties.Limits

Lifting properties and (co)limits #

In this file, we show some consequences of lifting properties in the presence of certain (co)limits.

theorem CategoryTheory.IsPushout.hasLiftingProperty {C : Type u_1} [CategoryTheory.Category.{u_2, u_1} C] {X Y Z W : C} {f : X Y} {s : X Z} {g : Z W} {t : Y W} (h : CategoryTheory.IsPushout s f g t) {Z' W' : C} (g' : Z' W') [CategoryTheory.HasLiftingProperty f g'] :
theorem CategoryTheory.IsPullback.hasLiftingProperty {C : Type u_1} [CategoryTheory.Category.{u_2, u_1} C] {X Y Z W : C} {f : X Y} {s : X Z} {g : Z W} {t : Y W} (h : CategoryTheory.IsPullback s f g t) {X' Y' : C} (f' : X' Y') [CategoryTheory.HasLiftingProperty f' g] :