proposition: Theorem Eme90_sound s : Eme90.prv s -> prv s.
proof: Proof. elim => {s}; eauto using prv,rGen,axEXD,axReg,axSer,axAXT,axEUeq,axAUeq,axAUr,axEUr,axAXdef,axARdef. Qed.
imports: mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert) CompDecModal.CTL(CTL_def hilbert)