Román Aranda , Enrique Ramírez-Losada , Jesús Rodríguez-Viorato
{"title":"论双曲结外部嵌套两次穿刺环的数量","authors":"Román Aranda , Enrique Ramírez-Losada , Jesús Rodríguez-Viorato","doi":"10.1016/j.topol.2024.108938","DOIUrl":null,"url":null,"abstract":"<div><p>This paper continues a program due to Motegi regarding universal bounds for the number of nonisotopic essential <em>n</em>-punctured tori in the complement of a hyperbolic knot in <span><math><msup><mrow><mi>S</mi></mrow><mrow><mn>3</mn></mrow></msup></math></span>. For <span><math><mi>n</mi><mo>=</mo><mn>1</mn></math></span>, Valdez-Sánchez showed that there are at most five nonisotopic Seifert tori in the exterior of a hyperbolic knot. In this paper, we address the case <span><math><mi>n</mi><mo>=</mo><mn>2</mn></math></span>. We show that there are at most six nonisotopic, nested, essential 2-holed tori in the complement of every hyperbolic knot.</p></div>","PeriodicalId":51201,"journal":{"name":"Topology and its Applications","volume":null,"pages":null},"PeriodicalIF":0.6000,"publicationDate":"2024-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"On the number of nested twice-punctured tori in a hyperbolic knot exterior\",\"authors\":\"Román Aranda , Enrique Ramírez-Losada , Jesús Rodríguez-Viorato\",\"doi\":\"10.1016/j.topol.2024.108938\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This paper continues a program due to Motegi regarding universal bounds for the number of nonisotopic essential <em>n</em>-punctured tori in the complement of a hyperbolic knot in <span><math><msup><mrow><mi>S</mi></mrow><mrow><mn>3</mn></mrow></msup></math></span>. For <span><math><mi>n</mi><mo>=</mo><mn>1</mn></math></span>, Valdez-Sánchez showed that there are at most five nonisotopic Seifert tori in the exterior of a hyperbolic knot. In this paper, we address the case <span><math><mi>n</mi><mo>=</mo><mn>2</mn></math></span>. We show that there are at most six nonisotopic, nested, essential 2-holed tori in the complement of every hyperbolic knot.</p></div>\",\"PeriodicalId\":51201,\"journal\":{\"name\":\"Topology and its Applications\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.6000,\"publicationDate\":\"2024-05-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Topology and its Applications\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0166864124001238\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Topology and its Applications","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0166864124001238","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
On the number of nested twice-punctured tori in a hyperbolic knot exterior
This paper continues a program due to Motegi regarding universal bounds for the number of nonisotopic essential n-punctured tori in the complement of a hyperbolic knot in . For , Valdez-Sánchez showed that there are at most five nonisotopic Seifert tori in the exterior of a hyperbolic knot. In this paper, we address the case . We show that there are at most six nonisotopic, nested, essential 2-holed tori in the complement of every hyperbolic knot.
期刊介绍:
Topology and its Applications is primarily concerned with publishing original research papers of moderate length. However, a limited number of carefully selected survey or expository papers are also included. The mathematical focus of the journal is that suggested by the title: Research in Topology. It is felt that it is inadvisable to attempt a definitive description of topology as understood for this journal. Certainly the subject includes the algebraic, general, geometric, and set-theoretic facets of topology as well as areas of interactions between topology and other mathematical disciplines, e.g. topological algebra, topological dynamics, functional analysis, category theory. Since the roles of various aspects of topology continue to change, the non-specific delineation of topics serves to reflect the current state of research in topology.
At regular intervals, the journal publishes a section entitled Open Problems in Topology, edited by J. van Mill and G.M. Reed. This is a status report on the 1100 problems listed in the book of the same name published by North-Holland in 1990, edited by van Mill and Reed.