Apply df_fallfac__df_bpoly__df_ef__df_e__df_sin__df_cos__df_tan__df_pi__df_dvds__df_bits__df_sad__df_smu__df_gcd__df_lcm__df_lcmf__df_prm__df_numer__df_denom with
wceq cdvds (copab (λ x0 x1 . wa (wa (wcel (cv x0) cz) (wcel (cv x1) cz)) (wrex (λ x2 . wceq (co (cv x2) (cv x0) cmul) (cv x1)) (λ x2 . cz)))).