fact: Definition uparam_arrow_map3 `{Funext} {A A' : Type} (PA : Param03.Rel A A') {B B' : Type} (PB : Param30.Rel B B') : Map3.Has (R_arrow PA PB).
imports: elpi(elpi) Coq(ssreflect) HoTT(HoTT) HoTT_additions Hierarchy