proposition: Theorem eq_strong_ps_normal_add_add₂ : ∀ ps₁ ps₂, normalise_ps (ps₁ + ps₂)%ps ≐ normalise_ps (ps_add₂ ps₁ ps₂).
proof: Proof. intros ps₁ ps₂. rewrite eq_strong_ps_add_add₂; reflexivity. Qed.
imports: Utf8 QArith NPeano NbarM Misc Field2 Power_series Puiseux_series