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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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9 retained statements36c6d0fef71a

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FormalConjectures/ErdosProblems/

829.lean

Retained formal statement3 of 9

The Hardy-Ramanujan taxicab number satisfies 1729=13+123=93+1031729 = 1^3 + 12^3 = 9^3 + 10^3, giving the four ordered representations (1,1728),(1728,1),(729,1000),(1000,729)(1, 1728), (1728, 1), (729, 1000), (1000, 729).

FormalConjectures/ErdosProblems/829.leanErdos829.sumRep_cubes_taxicab1 lineExact file
AdditiveCombinatorics.sumRep Erdos829.cubes 1729 = 4
TestStatement only, no proof