fact: Definition diamond_h {a a' : A} (b b' : B) (p : a = a') : jglue a b @ (jglue a' b)^ = jglue a b' @ (jglue a' b')^.
imports: Basics Types Cubical NullHomotopy Extensions Colimits.Pushout Truncations.Core Truncations.Connectedness Pointed.Core WildCat Spaces.Nat.Core