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Three-Page Embeddings of Singular Knots |
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| Authors: | V A Kurlin V V Vershinin |
| Institution: | (1) Department of Mathematics and Mechanics, Moscow State University, Russia vak26@yahoo.com;(2) Département des Sciences Mathématiques; Sobolev Institute of Mathematics, Université Montpellier II, Novosibirsk, Russia vershini@math.univ-montp2.fr |
| Abstract: | A semigroup with 15 generators and 84 relations is constructed. The center of the semigroup is in a one-to-one correspondence with the set of all isotopy classes of nonoriented singular knots (links with finitely many double intersections in general position) in  3. |
| Keywords: | isotopy classification singular knot three-page embedding universal semigroup knotted graph |
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