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theorem proved term proof

born_weight_pos

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formal statement (Lean)

  83theorem born_weight_pos (C_I : ℝ) : 0 < born_weight C_I := Real.exp_pos _

proof body

Term-mode proof.

  84
  85/-- For the C = 2A case: born_weight = sin²(θ_s).
  86    This follows from exp(-2A) = exp(2 ln sin θ) = sin²θ. -/

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