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def definition def or abbrev

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 214def summary : List String := [

proof body

Definition body.

 215  "8-tick quantizes θ to 8 values",
 216  "J-cost minimum at θ = 0",
 217  "No axion required (but compatible)",
 218  "Predicts θ = 0 exactly"
 219]
 220
 221/-! ## Strong CP Certificate (machine-verified) -/
 222
 223/-- **THEOREM (Strong CP Certificate)**: The J-cost is globally minimized at θ = 0.
 224    The minimum is achieved exactly; all other allowed values (multiples of π/4)
 225    have strictly positive J-cost.
 226    Proof: thetaJCost(θ) = 1 − cos θ ≥ 0 = thetaJCost(0) for all θ. -/

depends on (21)

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