(** * Coq codes *)
(** ** Dependencies *)
Require Export RegExp.Utility.
Require Export RegExp.Definitions.
(** ** [Empty] *)
(** [Empty] corresponds to 0 in Kleene algebra. *)

Lemma Eps_false : forall s, s <> ""%string -> Eps ~!= s.
Add Parametric Morphism : Or with
signature re_eq ==> re_eq ==> re_eq as Or_morphism.