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math.GT2007
Knot colouring polynomials
Michael Eisermann
This article introduces a natural extension of colouring numbers of knots, called colouring polynomials, and studies their relationship to Yang-Baxter invariants and quandle 2-cocy…
math.GT2007★ 11 cited
Equivalence of symmetric union diagrams
Michael Eisermann, Christoph Lamm
Motivated by the study of ribbon knots we explore symmetric unions, a beautiful construction introduced by Kinoshita and Terasaka 50 years ago. It is easy to see that every symmetr…