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theorem proved term proof

reductionFactor_band

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formal statement (Lean)

  43theorem reductionFactor_band :
  44    (0.87 : ℝ) < reductionFactor ∧ reductionFactor < 0.89 := by

proof body

Term-mode proof.

  45  unfold reductionFactor
  46  have h1 := phi_gt_onePointSixOne
  47  have h2 := phi_lt_onePointSixTwo
  48  refine ⟨by linarith, by linarith⟩
  49
  50/-! ## §2. Residual fraction after n cycles -/
  51
  52/-- Residual contaminant fraction after `n` cycles. -/

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