{"title":"Ore-type condition for Hamilton ℓ-cycle in k-uniform hypergraphs","authors":"Taijiang Jiang , Qiang Sun , Chao Zhang","doi":"10.1016/j.dam.2025.04.036","DOIUrl":null,"url":null,"abstract":"<div><div>The classic Ore theorem states that if the degree sum of any two non-adjacent vertices in an <span><math><mi>n</mi></math></span>-vertex graph is at least <span><math><mi>n</mi></math></span>, then the graph contains a Hamilton cycle. Tang and Yan extended this result to hypergraphs in 2017 and obtained an Ore-type condition for the existence of tight Hamilton cycles. In this paper, we consider the Ore-type sufficient condition for the existence of Hamilton <span><math><mi>ℓ</mi></math></span>-cycles. Our main result is that for <span><math><mrow><mi>k</mi><mo>≥</mo><mn>3</mn></mrow></math></span>, <span><math><mrow><mn>1</mn><mo>≤</mo><mi>ℓ</mi><mo><</mo><mi>k</mi><mo>/</mo><mn>2</mn></mrow></math></span>, <span><math><mrow><mi>γ</mi><mo>></mo><mn>0</mn></mrow></math></span> and for sufficiently large <span><math><mi>n</mi></math></span> with <span><math><mrow><mi>n</mi><mo>∈</mo><mrow><mo>(</mo><mi>k</mi><mo>−</mo><mi>ℓ</mi><mo>)</mo></mrow><mi>N</mi></mrow></math></span>, every <span><math><mi>k</mi></math></span>-uniform hypergraph <span><math><mrow><mi>H</mi><mo>=</mo><mrow><mo>(</mo><mi>V</mi><mo>,</mo><mi>E</mi><mo>)</mo></mrow></mrow></math></span> on <span><math><mi>n</mi></math></span> vertices with the degree sum of any two weakly independent sets at least <span><math><mrow><mrow><mo>(</mo><mfrac><mrow><mn>3</mn></mrow><mrow><mn>2</mn><mrow><mo>(</mo><mi>k</mi><mo>−</mo><mi>ℓ</mi><mo>)</mo></mrow></mrow></mfrac><mo>+</mo><mi>γ</mi><mo>)</mo></mrow><mi>n</mi></mrow></math></span> contains a Hamilton <span><math><mi>ℓ</mi></math></span>-cycle.</div></div>","PeriodicalId":50573,"journal":{"name":"Discrete Applied Mathematics","volume":"371 ","pages":"Pages 270-275"},"PeriodicalIF":1.0000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Discrete Applied Mathematics","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0166218X25002033","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The classic Ore theorem states that if the degree sum of any two non-adjacent vertices in an -vertex graph is at least , then the graph contains a Hamilton cycle. Tang and Yan extended this result to hypergraphs in 2017 and obtained an Ore-type condition for the existence of tight Hamilton cycles. In this paper, we consider the Ore-type sufficient condition for the existence of Hamilton -cycles. Our main result is that for , , and for sufficiently large with , every -uniform hypergraph on vertices with the degree sum of any two weakly independent sets at least contains a Hamilton -cycle.
期刊介绍:
The aim of Discrete Applied Mathematics is to bring together research papers in different areas of algorithmic and applicable discrete mathematics as well as applications of combinatorial mathematics to informatics and various areas of science and technology. Contributions presented to the journal can be research papers, short notes, surveys, and possibly research problems. The "Communications" section will be devoted to the fastest possible publication of recent research results that are checked and recommended for publication by a member of the Editorial Board. The journal will also publish a limited number of book announcements as well as proceedings of conferences. These proceedings will be fully refereed and adhere to the normal standards of the journal.
Potential authors are advised to view the journal and the open calls-for-papers of special issues before submitting their manuscripts. Only high-quality, original work that is within the scope of the journal or the targeted special issue will be considered.