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def definition def or abbrev

isEffectivelyClassical

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formal statement (Lean)

 258def isEffectivelyClassical {n : ℕ} (L : UncommittedLedger n) (threshold : ℝ) : Prop :=

proof body

Definition body.

 259  ∃ b ∈ L.branches, b.weight > threshold
 260
 261/-- **THEOREM (Decoherence → Effective Classicality)**:
 262    When one branch dominates (weight > threshold), the system behaves classically. -/

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