Article ID Journal Published Year Pages File Type
4660538 Topology and its Applications 2010 9 Pages PDF
Abstract

The crosscap number of a knot in the 3-sphere is defined as the minimal first Betti number of non-orientable surfaces bounded by the knot. In this paper, we determine the crosscap numbers of a large class of pretzel knots. The key ingredient to obtain the result is the algorithm of enumerating all essential surfaces for Montesinos knots developed by Hatcher and Oertel.

Related Topics
Physical Sciences and Engineering Mathematics Geometry and Topology