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    Horn, P. D. 2010. Higher-order Analogues of the Slice Genus of a Knot. International Mathematics Research Notices,


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  • Mathematical Proceedings of the Cambridge Philosophical Society, Volume 146, Issue 1
  • January 2009, pp. 135-149

The first-order genus of a knot

  • PETER D. HORN (a1)
  • DOI: http://dx.doi.org/10.1017/S0305004108001886
  • Published online: 01 January 2009
Abstract
Abstract

We introduce a geometric invariant of knots in S3, called the first-order genus, that is derived from certain 2-complexes called gropes, and we show it is computable for many examples. While computing this invariant, we draw some interesting conclusions about the structure of a general Seifert surface for some knots.

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[2]T. Cochran Noncommutative knot theory. Algebr. & Geome. Topo. 4 (2004), 347398.

[3]T. Cochran , K. Orr and P. Teichner Knot concordance, Whitney towers and L2-signatures. Anna. of Math. 157 (2003), 433519.

[4]T. Cochran and P. Teichner Knot concordance and von Neumann rho-invariants. Duke Math. J. 137 (2) (2007), 337379.

[7]W. B. R. Lickorish Prime knots and tangles. Trans. Amer. Math. Soc. 267 (1) (1981), 321332.

[8]Y. Minsky The classification of punctured-torus groups. Ann. Math. 149 (1999), 559626.

[10]H. Schubert Knoten und Vollringe. Acta Math. 90 (1953), 131286.

[12]W. Whitten Isotopy types of knot spanning surfaces. Topology 12 (1973), 373380.

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Mathematical Proceedings of the Cambridge Philosophical Society
  • ISSN: 0305-0041
  • EISSN: 1469-8064
  • URL: /core/journals/mathematical-proceedings-of-the-cambridge-philosophical-society
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