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erdos_138.variants.upper
Specification
Gowers [Go01] has proved $$W(k) \leq 2^{2^{2^{2^{2^{k+9}}}}.$$
Lean 4 Statement
theorem erdos_138.variants.upper (k : ℕ) : W k ≤ 2 ^ (2 ^ (2 ^ 2 ^ 2 ^ (k + 9)))
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