fact: Definition join_rec_inv_nattrans (A B : Type) : NatTrans (opyon_0gpd (Join A B)) (joinrecdata_0gpd_fun A B) := join_nattrans_recdata (joinrecdata_join A B).
imports: Basics Types Cubical NullHomotopy Extensions Colimits.Pushout Truncations.Core Truncations.Connectedness Pointed.Core WildCat Spaces.Nat.Core