proposition: Lemma AR2 (xm : XM) P Q w : cAR R P Q w -> pAR R P Q w.
proof: Proof. move => H. apply: (dn xm) => C. apply: cAR_cEU H. apply: EU2. exact: dmpAR. Qed.
imports: mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert) CompDecModal.CTL(CTL_def hilbert)