fact: Definition join_sym_recdata (A B : Type) : JoinRecData A B (Join B A) := Build_JoinRecData joinr joinl (fun a b => (jglue b a)^).
imports: Basics Types Cubical NullHomotopy Extensions Colimits.Pushout Truncations.Core Truncations.Connectedness Pointed.Core WildCat Spaces.Nat.Core