Instance andp_imp_CCC: forall A {ND : NatDed A}, CCCviaNatDed A andp imp.
Instance sepcon_wand_CCC: forall A {ND : NatDed A} {SL: SepLog A}, CCCviaNatDed A sepcon wand.

Lemma orp_is_exp {A}{ND: NatDed A}:
forall P Q, orp P Q = exp (fun x : bool => if x then P else Q).