{ "id": "2310.20462", "version": "v1", "published": "2023-10-31T13:54:38.000Z", "updated": "2023-10-31T13:54:38.000Z", "title": "Anti-van der Waerden Numbers of Graph Products with Trees", "authors": [ "Zhanar Berikkyzy", "Joe Miller", "Elizabeth Sprangel", "Shanise Walker", "Nathan Warnberg" ], "comment": "20 pages, 3 figures", "categories": [ "math.CO" ], "abstract": "Given a graph $G$, an exact $r$-coloring of $G$ is a surjective function $c:V(G) \\to [1,\\dots,r]$. An arithmetic progression in $G$ of length $j$ with common difference $d$ is a set of vertices $\\{v_1,\\dots, v_j\\}$ such that $dist(v_i,v_{i+1}) = d$ for $1\\le i < j$. An arithmetic progression is rainbow if all of the vertices are colored distinctly. The fewest number of colors that guarantees a rainbow arithmetic progression of length three is called the anti-van der Waerden number of $G$ and is denoted $aw(G,3)$. It is known that $3 \\le aw(G\\square H,3) \\le 4$. Here we determine exact values $aw(T\\square T',3)$ for some trees $T$ and $T'$, determine $aw(G\\square T,3)$ for some trees $T$, and determine $aw(G\\square H,3)$ for some graphs $G$ and $H$.", "revisions": [ { "version": "v1", "updated": "2023-10-31T13:54:38.000Z" } ], "analyses": { "subjects": [ "05C35", "05C15", "05C12", "G.2.2", "G.2.1" ], "keywords": [ "anti-van der waerden number", "graph products", "determine exact values", "rainbow arithmetic progression" ], "note": { "typesetting": "TeX", "pages": 20, "language": "en", "license": "arXiv", "status": "editable" } } }