fact: Parameter var_acc : forall R l x sigma, In x (var_list_list l) -> (forall t, In t (map (apply_subst sigma) l) -> Acc (one_step R) t) -> Acc (one_step R) (apply_subst sigma (Var x)).
imports: Coq(List Relations Wellfounded Arith Setoid) CoLoR(closure more_list weaved_relation dickson term_spec)