{ "id": "2405.18576", "version": "v1", "published": "2024-05-28T20:49:08.000Z", "updated": "2024-05-28T20:49:08.000Z", "title": "Density versions of the binary Goldbach problem", "authors": [ "Ali Alsetri", "Xuancheng Shao" ], "comment": "9 pages", "categories": [ "math.NT" ], "abstract": "Let $\\delta > 1/2$. We prove that if $A$ is a subset of the primes such that the relative density of $A$ in every reduced residue class is at least $\\delta$, then almost all even integers can be written as the sum of two primes in $A$. The constant $1/2$ in the statement is best possible. Moreover we give an example to show that for any $\\varepsilon > 0$ there exists a subset of the primes with relative density at least $1 - \\varepsilon$ such that $A+A$ misses a positive proportion of even integers.", "revisions": [ { "version": "v1", "updated": "2024-05-28T20:49:08.000Z" } ], "analyses": { "keywords": [ "binary goldbach problem", "density versions", "relative density", "reduced residue class" ], "note": { "typesetting": "TeX", "pages": 9, "language": "en", "license": "arXiv", "status": "editable" } } }