# Essential surfaces derived from knot and link diagrams

Algebra/Geometry/Topology Seminar

#### by Makoto Ozawa

Institution: Komazawa University
Date: Mon 11th May 2009
Time: 2:15 PM
Location: David Caro Building, Room 211

Abstract: Many knot classes of alternating, positive, Montesinos, adequate, homogeneous, algebraic, etc. are defined from knot and link diagrams, and essential surfaces in their complements are studied. In this talk, we define $\sigma$-adequate and $\sigma$-homogeneous knots and algebraically alternating knots which are extensions of the above knot classes, and describe essential surfaces in their complements.