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Erdős problem 829

Erdős Problem 829 (open). Let A⊆NA \subseteq \mathbb{N} be the set of perfect cubes. Is it true that (1A∗1A)(n)≪(log⁡n)O(1)(1_A \ast 1_A)(n) \ll (\log n)^{O(1)}? That is, does there exist a natural number CC such that the number of representations of nn as a sum of two cubes is O((log⁡n)C)O((\log n)^C) as n→∞n \to \infty?

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FormalConjectures/ErdosProblems/

829.lean

Retained formal statement7 of 9

Mahler proved (1A∗1A)(n)≫(log⁡n)1/4(1_A \ast 1_A)(n) \gg (\log n)^{1/4} for infinitely many nn, where AA is the set of perfect cubes.

[Ma35b] Mahler, K., _On the lattice points on curves of genus 1_. Proc. London Math. Soc. (2) (1935), 431-466.

FormalConjectures/ErdosProblems/829.leanErdos829.variants.mahler1 lineExact file
∃ C > 0, ∃ᶠ (n : ℕ) in Filter.atTop, C * Real.log ↑n ^ (1 / 4) ≤ ↑(AdditiveCombinatorics.sumRep Erdos829.cubes n)
SolvedStatement only, no proof