fact: Definition rinstInst_up_poly_type_term (xi : ( nat ) -> nat ) (sigma : ( nat ) -> term ) (Eq : forall x, (funcomp (var ) xi) x = sigma x) : forall x, (funcomp (var ) (upRen_poly_type_term xi)) x = (up_poly_type_term sigma) x := fun n => ap (ren_term shift id) (Eq n).
imports: Undecidability.SystemF.Autosubst.unscoped Undecidability.SystemF.SysF Morphisms