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def definition def or abbrev

L

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formal statement (Lean)

  15def L : Ledger M :=

proof body

Definition body.

  16  { debit := fun _ => 0
  17  , credit := fun _ => 0 }
  18
  19instance : Conserves L :=
  20  { conserve := by
  21      intro ch hclosed
  22      -- phi is identically 0, so flux is 0
  23      simp [chainFlux, phi, hclosed] }
  24

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