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lemma proved term proof

phi43_lt

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formal statement (Lean)

 287private lemma phi43_lt : Constants.phi ^ (43 : ℕ) < (970320000 : ℝ) := by

proof body

Term-mode proof.

 288  rw [phi_eq_goldenRatio]; exact Numerics.phi_pow43_lt
 289
 290/-- The proton binding-energy prediction lies in (969, 970.4) MeV. -/

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