{"title":"End-essential spanning surfaces for links in thickened surfaces","authors":"Thomas Kindred","doi":"10.1016/j.topol.2024.109187","DOIUrl":null,"url":null,"abstract":"<div><div>Let <em>D</em> be a cellular alternating link diagram on a closed orientable surface Σ. We prove that if <em>D</em> has no removable nugatory crossings then each checkerboard surface from <em>D</em> is <span><math><msub><mrow><mi>π</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span>-essential and contains no essential closed curve that is ∂-parallel in <span><math><mi>Σ</mi><mo>×</mo><mi>I</mi></math></span>. Our chief motivation comes from technical aspects of a companion paper, where we prove that Tait's flyping conjecture holds for alternating virtual links. We also describe possible applications via Turaev surfaces.</div></div>","PeriodicalId":51201,"journal":{"name":"Topology and its Applications","volume":"361 ","pages":"Article 109187"},"PeriodicalIF":0.6000,"publicationDate":"2024-12-27","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/S0166864124003729","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Let D be a cellular alternating link diagram on a closed orientable surface Σ. We prove that if D has no removable nugatory crossings then each checkerboard surface from D is -essential and contains no essential closed curve that is ∂-parallel in . Our chief motivation comes from technical aspects of a companion paper, where we prove that Tait's flyping conjecture holds for alternating virtual links. We also describe possible applications via Turaev surfaces.
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.