fact: Fixpoint hec_exists l : bool := match l with | [::] => false | hd :: tl => (has_eps_can hd) || (hec_exists tl) end.
imports: Coq(RelationClasses Setoid Morphisms) HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq fintype) mathcomp(bigop path) RegLang(languages) RegexpBrzozowski(glue regexp finite_der equiv)