proposition: Theorem href_of C : ref F C -> href C.
proof: Proof. Proof using sfc_F. elim => *;[ apply: href_R1 | apply: href_R2]; eassumption. Qed.
imports: Lia mathcomp.ssreflect.ssreflect mathcomp(all_ssreflect) CompDecModal.libs(edone bcase fset base modular_hilbert sltype) CompDecModal.K(K_def demo)