Constructing Seifert surfaces from n-bridge link projections

Details Constructing Seifert surfaces from n-bridge link projections Constructing Seifert surfaces from n-bridge link projections

2008-01-30

arxiv.org/abs/0801.4800v1

Mathematics

Geometric Topology

19 pages, 15 figures

Scientific paper

This paper presents a new algorithm "A" for constructing Seifert surfaces from n-bridge projections of links. The algorithm produces minimal complexity surfaces for large classes of braids and alternating links. In addition, we consider a family of knots for which the canonical genus is strictly greater than the genus, (g_c(K) > g(K)), and show that A builds surfaces realizing the knot genus g(K). We also present a generalization of Seifert's algorithm which may be used to construct surfaces representing arbitrary relative second homology classes in a link complement.

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