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def definition def or abbrev

entropy

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formal statement (Lean)

  85noncomputable def entropy (sys : DiscreteSystem) (T : ℝ) (hT : T > 0) : ℝ :=

proof body

Definition body.

  86  k_B * (log (partitionFunction sys T hT) + beta T hT * averageEnergy sys T hT)
  87
  88/-- Heat capacity C_V = ∂⟨E⟩/∂T. -/

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