fact: Definition isepi_funext {X Y : Type} (f : X -> Y) := forall Z : HSet, forall g0 g1 : Y -> Z, g0 o f == g1 o f -> g0 == g1.
imports: Basics Types TruncType ReflectiveSubuniverse Colimits.Pushout Truncations.Core HIT.SetCone