links;
link concordance;
covering Sato-Levine invariants;
D O I:
10.1090/S0002-9947-97-01885-0
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
Two covering versions of the Sato-Levine invariant are constructed which provide obstructions to certain two-component oriented links in the 3-sphere being link concordant to boundary links. These covering invariants are rational functions one of which detects both nonamphicheirality and noninvertibility of oriented links.
机构:
Tokyo Univ Agr & Technol, Dept Math, Naka Ku, Koganei, Tokyo 1848588, JapanTokyo Univ Agr & Technol, Dept Math, Naka Ku, Koganei, Tokyo 1848588, Japan