Apply ax_hfvadd__ax_hvcom__ax_hvass__ax_hv0cl__ax_hvaddid__ax_hfvmul__ax_hvmulid__ax_hvmulass__ax_hvdistr1__ax_hvdistr2__ax_hvmul0__ax_hfi__ax_his1__ax_his2__ax_his3__ax_his4__ax_hcompl__df_sh with
∀ x0 x1 x2 : ι → ο . w3a (wcel x0 cc) (wcel x1 cc) (wcel x2 chil) ⟶ wceq (co (co x0 x1 caddc) x2 csm) (co (co x0 x2 csm) (co x1 x2 csm) cva).