proposition: Remark rdec_trans_sigma_copy : sigma_ctrl_copy s0 (bm (rec_dec_trans c0 s1 s2)) = sigma_ctrl_copy s0 (bm c0).
proof: Proof. intros; unfold sigma_ctrl_copy in |- *. apply sigma_simpl; intros; apply rdec_trans_ctrl_copy. Qed.
imports: init table_act mess_act