Self delta-equivalence of cobordant links

Nakanishi, Yasutaka; Shibuya, Tetsuo; Yasuhara, Akira

doi:10.1090/S0002-9939-06-08234-7

Self delta-equivalence of cobordant links
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by Yasutaka Nakanishi, Tetsuo Shibuya and Akira Yasuhara PDF

Proc. Amer. Math. Soc. 134 (2006), 2465-2472 Request permission

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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