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green_2_upper_bound_ruzsa

Specification

From [Ru05] the best-known upper bound is $|S| \lt e^{C \sqrt{\log |A|}}$.

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Lean 4 Statement 
theorem green_2_upper_bound_ruzsa :
    ∃ C > (0 : ℝ), ∀ A : Finset ℤ,
      (maxRestrictedSumAvoidingSubsetSize A : ℝ) < Real.exp (C * Real.sqrt (Real.log A.card))
ID: GreensOpenProblems__2__green_2_upper_bound_ruzsa
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