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structure definition def or abbrev

PotentialFunction

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formal statement (Lean)

 193structure PotentialFunction (L : GradedLedger) where
 194  /-- The potential at each vertex -/
 195  potential : Fin L.n → ℤ
 196  /-- Edge weight = potential difference -/
 197  gradient : ∀ u v : Fin L.n,
 198    L.edges u v = potential v - potential u
 199
 200/-- **PROVED: If a potential exists, then all cycle sums are zero.** -/

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