A Polynomial Invariant for Flat Virtual Links
نویسنده
چکیده
In searching for methods to distinguish knots and links, recent work has focussed on the more general virtual knots and links, introduced by Kauffman in [2]. If we ignore the over/under information at each crossing, we obtain a flat virtual knot or link (still called a knot or a link), sometimes called the universe of the original virtual knot or link. It is a triviality that if the original virtual link is the unlink, then the flat virtual link is also the unlink. Thus, being able to determine that a flat virtual link is not the unlink implies that every virtual link with that universe is non-trivial.
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