Alexander and writhe polynomials for virtual knots

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Abstract

We give a new interpretation of the Alexander polynomial Δ 0 for virtual knots due to Sawollek and Silver and Williams, and use it to show that, for any virtual knot, Δ 0 determines the writhe polynomial of Cheng and Gao (equivalently, Kauffman's affine index polynomial). We also use it to define a second-order writhe polynomial, and give some applications.

Original languageEnglish
JournalJournal of Knot Theory and its Ramifications
Volume25
Issue number8
StatePublished - 2016

Disciplines

  • Geometry and Topology

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