fact: Definition L1 := Conc (Atom false) (Conc (Star (Plus (Atom false) (Atom true))) (Atom true)).
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq fintype) mathcomp(bigop path) RegexpBrzozowski(glue gfinset regexp finite_der equiv) RegexpBrzozowski(sim1 sim2)