fact: Definition rinstInst_up_term_term (xi : ( nat ) -> nat ) (sigma : ( nat ) -> term ) (Eq : forall x, (funcomp (var ) xi) x = sigma x) : forall x, (funcomp (var ) (upRen_term_term xi)) x = (up_term_term sigma) x := fun n => match n with | S n => ap (ren_term id shift) (Eq n) | 0 => eq_refl end.
imports: Undecidability.SystemF.Autosubst.unscoped Undecidability.SystemF.SysF Morphisms