{ "id": "2102.08995", "version": "v1", "published": "2021-02-17T19:39:15.000Z", "updated": "2021-02-17T19:39:15.000Z", "title": "Integer colorings with no rainbow 3-term arithmetic progression", "authors": [ "Xihe Li", "Hajo Broersma", "Ligong Wang" ], "comment": "13 pages", "categories": [ "math.CO" ], "abstract": "In this paper, we study the rainbow Erd\\H{o}s-Rothschild problem with respect to 3-term arithmetic progressions. We obtain the asymptotic number of $r$-colorings of $[n]$ without rainbow 3-term arithmetic progressions, and we show that the typical colorings with this property are 2-colorings. We also prove that $[n]$ attains the maximum number of rainbow 3-term arithmetic progression-free $r$-colorings among all subsets of $[n]$. Moreover, the exact number of rainbow 3-term arithmetic progression-free $r$-colorings of $\\mathbb{Z}_p$ is obtained, where $p$ is any prime and $\\mathbb{Z}_p$ is the cyclic group of order $p$.", "revisions": [ { "version": "v1", "updated": "2021-02-17T19:39:15.000Z" } ], "analyses": { "subjects": [ "11B25", "11B75", "05C55" ], "keywords": [ "integer colorings", "arithmetic progression-free", "maximum number", "asymptotic number", "exact number" ], "note": { "typesetting": "TeX", "pages": 13, "language": "en", "license": "arXiv", "status": "editable" } } }