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 cen (copab (λ x0 x1 . wex (λ x2 . wf1o (cv x0) (cv x1) (cv x2)))).
Assume H12:
∀ x0 x1 x2 : ι → ο . wceq (cinf x0 x1 x2) ....