NF weak partition development: NominalAlphaRepairedBase001037OpabOpaqueHoisted004.

noncomputable def NFChoice.DirectNominalPrf.NominalAlphaWrappersRepaired.nominalDfOpab (ph : SemanticCore.Wff) (x y z : SemanticCore.Var) (dv_ph_z : z ∉ ph.fv) (dv_x_z : x ≠ z) (dv_y_z : y ≠ z) : Nominal.NPrf (SemanticCore.Wff.classEq (Compiler.CompactSourceSyntax.synCopab x y ph) (SemanticCore.Class.cab z (Compiler.CompactSourceSyntax.synWex x (Compiler.CompactSourceSyntax.synWex y (Compiler.CompactSourceSyntax.synWa (SemanticCore.Wff.classEq (SemanticCore.Class.cv z) (Compiler.CompactSourceSyntax.synCop (SemanticCore.Class.cv x) (SemanticCore.Class.cv y))) ph)))))

Checked nominal proof certificate identified upstream as nominal_df_opab.

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