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theorem proved term proof

emp_cost_zero

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formal statement (Lean)

 164theorem emp_cost_zero (κ : CostFunction Config) :
 165    κ.C emp = 0 :=

proof body

Term-mode proof.

 166  (κ.dichotomy emp).mpr emp_consistent
 167
 168/-- Cost is positive if and only if the configuration is inconsistent. -/

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