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theorem proved term proof

sin2_theta_approx

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formal statement (Lean)

 139theorem sin2_theta_approx : |sin2_theta_W - 0.23| < 0.01 := by

proof body

Term-mode proof.

 140  simp only [sin2_theta_W]
 141  norm_num
 142
 143/-- Observed weak-mixing value lies in the physical interval `(0,1)`. -/

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depends on (4)

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