Keywords. Three-manifold, knot, link, Hopf algebra, antipode, ribbon element, trace, right integral
AMS subject classification. Primary: 57N10. Secondary: 57M50.
Submitted: 20 January 1999. (Revised: 28 July 1999.) Published: 18 November 1999.
Louis H Kauffman
Department of Mathematics, Statistics and Computer Science
University of Illinois at Chicago
851 South Morgan Street, Chicago, IL 60607-7045, USA
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