KAUFFMAN-LIKE POLYNOMIAL AND CURVES IN 2-SURFACES
Abstract
In the present paper, we construct a virtual knot invariant with values in the free infinite-dimensional module over Z[a, a-1]. The restriction of this invariant to the set of classical knots coincides with the Jones–Kauffman polynomial. It distinguishes virtual knots stronger than the generalised Jones-Kauffman polynomial proposed in [Kau].