fact: Fixpoint eval (M:ts) (s : form) := match s with | fF => (fun _ => False) | fV v => label v | fImp s t => (fun w => eval M s w -> eval M t w) | fAX s => cAX (@trans M) (eval M s) end.
imports: Relations mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert sltype)