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def definition def or abbrev

pageEntropy

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formal statement (Lean)

  79noncomputable def pageEntropy (bh : EvolvingBlackHole) : ℝ :=

proof body

Definition body.

  80  if bh.evaporation_fraction ≤ pageTime then
  81    radiationEntropyNaive bh
  82  else
  83    remainingEntropy bh
  84
  85/-- **THEOREM**: Page entropy is maximized at f = 1/2. -/

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