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theorem proved term proof

gapAt_pos

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formal statement (Lean)

  31theorem gapAt_pos (k : ℕ) : 0 < gapAt k := by

proof body

Term-mode proof.

  32  unfold gapAt referenceGap
  33  have : 0 < phi ^ (-(k : ℤ)) := zpow_pos Constants.phi_pos _
  34  linarith [this]
  35

used by (2)

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depends on (6)

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