fact: CoInductive cAG (p : X -> Prop) (w : X) : Prop := | AGs : p w -> (forall v, e w v -> cAG p v) -> cAG p w.
imports: Relations mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert sltype)