fact: Definition path_path_fun {X Y : UU} {f g : X → Y} {e₁ e₂ : f = g} (h : ∏ (x : X), eqtohomot e₁ x = eqtohomot e₂ x) : e₁ = e₂.
imports: UniMath.Foundations.PartD UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.PartA