{ "id": "2010.07911", "version": "v1", "published": "2020-10-15T17:43:30.000Z", "updated": "2020-10-15T17:43:30.000Z", "title": "A Note on Powers of Paths in Tournaments", "authors": [ "Nemanja Draganić", "David Munhá Correia", "Benny Sudakov" ], "comment": "2 pages", "categories": [ "math.CO" ], "abstract": "In this note we show that every tournament on $n$ vertices contains the $k$-th power of a directed path of length $n/2^{6k+7}$, which improves upon the recent bound of Scott and Kor\\'{a}ndi of $n/2^{2^{3k}}$. By doing so, we get an inverse exponential dependence on $k$, which is best possible as Yuster recently showed an upper bound of $kn/{2^{k/2}}$.", "revisions": [ { "version": "v1", "updated": "2020-10-15T17:43:30.000Z" } ], "analyses": { "keywords": [ "tournament", "inverse exponential dependence", "th power", "vertices contains", "upper bound" ], "note": { "typesetting": "TeX", "pages": 2, "language": "en", "license": "arXiv", "status": "editable" } } }