proposition: Lemma rAIL s t u : mprv (s :/\: t ---> u) -> mprv (s ---> t ---> u).
proof: Proof. move => H. rewrite <- H. exact: axAI. Qed.
imports: mathcomp(all_ssreflect) CompDecModal.libs(edone base fset induced_sym) Setoid Morphisms Relation_Definitions