European Journal of CombinatoricsVolume 20, Issue 7, October 1999, Pages 663-691Regular ArticleVirtual Knot TheoryAuthor links open overlay panelLouis H. KauffmanShow moreShareCitehttps://doi.org/10.1006/eujc.1999.0314Get rights and contentUnder an Elsevier user licenseopen archiveAbstractThis paper is an introduction to the theory of virtual knots. It is dedicated to the memory of Francois Jaeger.Previous article in issueNext article in issueRecommended articlesCited by (0)Copyright © 1999 Academic Press. All rights reserved.