Mathematics – Geometric Topology
Scientific paper
1999-12-21
Mathematics
Geometric Topology
17 pages, 11 figures, latex2e, metafont; error in example corrected and minor changes
Scientific paper
A polynomial invariant of virtual links, arising from an invariant of links in thickened surfaces introduced by Jaeger, Kauffman, and Saleur, is defined and its properties are investigated. Examples are given that the invariant can detect chirality and even non-invertibility of virtual knots and links. Furthermore, it is shown that the polynomial satisfies a Conway-type skein relation - in contrast to the Alexander polynomial derived from the virtual link group.
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