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Formalizes Erdos Problem 1145: https://www.erdosproblems.com/1145

@github-actions github-actions bot added the erdos-problems Erdős Problems label Jan 28, 2026
A ⊆ Ici 1 →
B ⊆ Ici 1 →
Tendsto (fun n ↦ (Nat.nth (· ∈ A) n : ℝ) / (Nat.nth (· ∈ B) n : ℝ)) atTop (𝓝 1) →
Ici 2 ⊆ A + B →
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why do you need this? its not mentioned on the website

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Actually you are right. There is a problem with the statement on the website, as we cant have $1 \in A + B$

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I asked about this on the website. Let's not merge this until this is cleared up.

@felixpernegger
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Can you include the implication (and maybe prove it) that 1145 => 28?

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4 participants