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theorem proved term proof

lambda_pos

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formal statement (Lean)

  95theorem lambda_pos : lambda > 0 := by

proof body

Term-mode proof.

  96  have h : 1 < phi := one_lt_phi
  97  exact Real.log_pos h
  98
  99/-! ## Canonical one-loop beta/gamma kernels (Level-B groundwork) -/
 100
 101/-- One-loop QCD beta coefficient in the convention `beta0 = 11 - 2*nf/3`. -/

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depends on (14)

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