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theorem proved term proof

b0_at_Nf5_pos

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formal statement (Lean)

  64theorem b0_at_Nf5_pos : 0 < b0 5 := by

proof body

Term-mode proof.

  65  unfold b0 N_c
  66  apply div_pos _ (by positivity : (0 : ℝ) < 12 * Real.pi)
  67  norm_num
  68
  69/-- The two-loop running closed form. -/

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