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On ErdH{o}s and S\'ark\"ozy's sequences with Property P

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arxiv 1609.07935 v1 pith:4WIMUHT6 submitted 2016-09-26 math.NT

On ErdH{o}s and S\'ark\"ozy's sequences with Property P

classification math.NT
keywords propertysqrtcountingfracfunctionhavingboundconstruct
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A sequence $A$ of positive integers having the property that no element $a_i \in A$ divides the sum $a_j+a_k$ of two larger elements is said to have `Property P'. We construct an infinite set $S\subset \mathbb{N}$ having Property P with counting function $S(x)\gg\frac{\sqrt{x}}{\sqrt{\log x}(\log\log x)^2(\log \log \log x)^2}$. This improves on an example given by Erd\H{o}s and S\'ark\"ozy with a lower bound on the counting function of order $\frac{\sqrt{x}}{\log x}$.

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Cited by 2 Pith papers

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  1. Advancing Mathematics Research with AI-Driven Formal Proof Search

    cs.AI 2026-05 unverdicted novelty 7.0

    LLM-based agents in Lean solved 9 of 353 open Erdős problems and proved 44 of 492 OEIS conjectures at a few hundred dollars each.

  2. Advancing Mathematics Research with AI-Driven Formal Proof Search

    cs.AI 2026-05 conditional novelty 7.0

    An LLM-based agent with Lean verification autonomously solved multiple open Erdős problems and OEIS conjectures in the first large-scale test.