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theorem proved term proof

T2_substrate_pos

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formal statement (Lean)

  78theorem T2_substrate_pos (T2_0 : ℝ) (k : ℕ) (hT : 0 < T2_0) :
  79    0 < T2_substrate T2_0 k := by

proof body

Term-mode proof.

  80  unfold T2_substrate
  81  exact div_pos hT (pow_pos Constants.phi_pos k)
  82
  83/-- `T₂_substrate` is strictly decreasing in `k`. -/

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depends on (6)

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