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def definition def or abbrev

strictlyBetter

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formal statement (Lean)

  53def strictlyBetter (S : StrainFunctional State) (x y : State) : Prop :=

proof body

Definition body.

  54  S.J x < S.J y
  55
  56/-- Weak improvement: x is at least as good as y. -/

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depends on (9)

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