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def definition def or abbrev

entropyFromZ

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formal statement (Lean)

  91noncomputable def entropyFromZ (z : ℝ) (density : ℝ) : ℝ :=

proof body

Definition body.

  92  Real.log (1 + z * density)
  93
  94/-- Entropy is monotone in Z (second law from Berry phase). -/

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