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September 2005 No 2-knot has triple point number two or three
Shin Satoh
Osaka J. Math. 42(3): 543-556 (September 2005).

Abstract

It is known that a 2-knot has the triple point number less than two if and only if it is of ribbon-type. We prove that there is no 2-knot of triple point number two or three. Hence the 2-twist-spun trefoil, which is known as a 2-knot of triple point number four, is one of the simplest non-ribbon 2-knots.

Citation

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Shin Satoh. "No 2-knot has triple point number two or three." Osaka J. Math. 42 (3) 543 - 556, September 2005.

Information

Published: September 2005
First available in Project Euclid: 21 July 2006

zbMATH: 1088.57018
MathSciNet: MR2166721

Rights: Copyright © 2005 Osaka University and Osaka City University, Departments of Mathematics

Vol.42 • No. 3 • September 2005
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