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lemma proved term proof

lambda_rec_pos

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formal statement (Lean)

 427lemma lambda_rec_pos : 0 < lambda_rec := by

proof body

Term-mode proof.

 428  simp [lambda_rec]
 429
 430/-- Newton's gravitational constant G derived from first principles (RS-native form).
 431    \(G = \lambda_{\text{rec}}^2 c^3 / (\pi \hbar)\). -/

used by (4)

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depends on (13)

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