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Self delta-equivalence of cobordant links

Author(s): Yasutaka Nakanishi; Tetsuo Shibuya; Akira Yasuhara
Journal: Proc. Amer. Math. Soc. 134 (2006), 2465-2472.
MSC (2000): Primary 57M25
Posted: February 3, 2006
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Abstract: Self $ \Delta$-equivalence is an equivalence relation for links, which is stronger than the link-homotopy defined by J. Milnor. It is known that cobordant links are link-homotopic and that they are not necessarily self $ \Delta$-equivalent. In this paper, we will give a sufficient condition for cobordant links to be self $ \Delta$-equivalent.

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Additional Information:

Yasutaka Nakanishi
Affiliation: Department of Mathematics, Kobe University, Nada, Kobe 657-8501, Japan
Email: nakanisi@math.kobe-u.ac.jp

Tetsuo Shibuya
Affiliation: Department of Mathematics, Osaka Institute of Technology, Omiya 5-16-1, Asahi, Osaka 535-8585, Japan
Email: shibuya@ge.oit.ac.jp

Akira Yasuhara
Affiliation: Department of Mathematics, Tokyo Gakugei University, Nukuikita 4-1-1, Koganei, Tokyo 184-8501, Japan
Email: yasuhara@u-gakugei.ac.jp

DOI: 10.1090/S0002-9939-06-08234-7
PII: S 0002-9939(06)08234-7
Keywords: $\Delta$-move, self $\Delta$-equivalence, link-homotopy, cobordant
Received by editor(s): October 19, 2004
Received by editor(s) in revised form: March 3, 2005.
Posted: February 3, 2006
Communicated by: Ronald A. Fintushel
Copyright of article: Copyright 2006, American Mathematical Society

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