fact: Definition path_sigma_hprop_pp {A : Type} {P : A -> Type} `{forall x, IsHProp (P x)} {a b c : A} (p : a = b) (q : b = c) (x : P a) (y : P b) (z : P c) : path_sigma_hprop (a;x) (c;z) (p @ q) = path_sigma_hprop (a;x) (b;y) p @ path_sigma_hprop (b;y) (c;z) q.
imports: HoTT.Basics Types.Arrow Types.Paths