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def definition def or abbrev

addCharges

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formal statement (Lean)

 212def addCharges {N : ℕ} (Q₁ Q₂ : TopologicalCharge N) : TopologicalCharge N where
 213  value := fun c => Q₁.value c + Q₂.value c

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Definition body.

 214  conserved := fun c next h => by rw [Q₁.conserved c next h, Q₂.conserved c next h]
 215
 216/-- Negation of a topological charge. -/

depends on (9)

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