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def definition def or abbrev

mass_ratio

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formal statement (Lean)

 166noncomputable def mass_ratio : ℝ := deltam31_sq / deltam21_sq

proof body

Definition body.

 167
 168/-- **THEOREM**: The atmospheric/solar mass ratio is approximately φ⁷ with ~15% deviation.
 169    mass_ratio ≈ 33.8, φ⁷ ≈ 29.0, ratio ≈ 1.17
 170
 171    The numerical verification shows mass_ratio/φ⁷ ∈ (1.1, 1.2). -/

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