fact: Parameter no_need_of_instance_is_modular : forall (R1 R2 : term -> term -> Prop), (forall t1 t2, axiom R1 t1 t2 -> R1 t1 t2) -> (forall t1 t2, axiom R2 t1 t2 -> R2 t1 t2) -> (forall t1 t2, axiom (union term R1 R2) t1 t2 -> (union term R1 R2) t1 t2).
imports: Coq(List Relations Wellfounded Arith Setoid) CoLoR(closure more_list weaved_relation dickson term_spec)