fact: Definition P2 C S := ~~ [all u in C, if u is fAX (fAG s)^- then C \in fulfillAGb S0 S s else true].
imports: Relations Lia mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert sltype) CompDecModal.Kstar(Kstar_def demo hilbert_ref gen_def)