Apply df_ec__df_qs__df_map__df_pm__df_ixp__df_en__df_dom__df_sdom__df_fin__df_fsupp__df_fi__df_sup__df_inf__df_oi__df_har__df_wdom__ax_reg__ax_inf with
wceq cfn (cab (λ x0 . wrex (λ x1 . wbr (cv x0) (cv x1) cen) (λ x1 . com))).
Assume H12:
∀ x0 x1 x2 : ι → ο . wceq (cinf x0 x1 ...) ....