Articles

SOME APPLICATIONS OF PLANAR GRAPH IN KNOT THEORY

  • CHENG Zhi-Yun ,
  • GAO Hong-Zhu
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  • School of Mathematical Sciences, Beijing Normal University, Beijing 100875, China;Laboratory of Mathematics and Complex Systems, Ministry of Education, Beijing 100875, China

Received date: 2009-12-22

  Revised date: 2010-09-02

  Online published: 2012-03-20

Supported by

Supported by NSF 10671018 and NSF 11171025.

Abstract

The relationship between a link diagram and its corresponding planar graph is briefly reviewed. A necessary and sufficient condition is given to detect when a planar graph corresponds to a knot. The relationship between planar graph and almost planar Seifert surface is discussed. Using planar graph, we construct an alternating amphicheiral prime knot with crossing number n for any even number n  4. This gives an affirmative answer to problem 1.66(B) on Kirby’s problem list.

Cite this article

CHENG Zhi-Yun , GAO Hong-Zhu . SOME APPLICATIONS OF PLANAR GRAPH IN KNOT THEORY[J]. Acta mathematica scientia, Series B, 2012 , 32(2) : 663 -671 . DOI: 10.1016/S0252-9602(12)60047-2

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Outlines

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