Memoirs of the American Mathematical Society 2012; 130 pp; softcover Volume: 217 ISBN10: 0821853333 ISBN13: 9780821853337 List Price: US$71 Individual Members: US$42.60 Institutional Members: US$56.80 Order Code: MEMO/217/1021
 The authors propose a new approach in studying Dehn surgeries on knots in the \(3\)sphere \(S^3\) yielding Seifert fiber spaces. The basic idea is finding relationships among such surgeries. To describe relationships and get a global picture of Seifert surgeries, they introduce "seiferters" and the Seifert Surgery Network, a \(1\)dimensional complex whose vertices correspond to Seifert surgeries. A seiferter for a Seifert surgery on a knot \(K\) is a trivial knot in \(S^3\) disjoint from \(K\) that becomes a fiber in the resulting Seifert fiber space. Twisting \(K\) along its seiferter or an annulus cobounded by a pair of its seiferters yields another knot admitting a Seifert surgery. Edges of the network correspond to such twistings. A path in the network from one Seifert surgery to another explains how the former Seifert surgery is obtained from the latter after a sequence of twistings along seiferters and/or annuli cobounded by pairs of seiferters. The authors find explicit paths from various known Seifert surgeries to those on torus knots, the most basic Seifert surgeries. The authors classify seiferters and obtain some fundamental results on the structure of the Seifert Surgery Network. From the networking viewpoint, they find an infinite family of Seifert surgeries on hyperbolic knots which cannot be embedded in a genus two Heegaard surface of \(S^3\). Table of Contents  Introduction
 Seiferters and Seifert Surgery Network
 Classification of seiferters
 Geometric aspects of seiferters
 \(S\)linear trees
 Combinatorial structure of Seifert Surgery Network
 Asymmetric seiferters and Seifert surgeries on knots without symmetry
 Seifert surgeries on torus knots and graph knots
 Paths from various known Seifert surgeries to those on torus knots
 Bibliography
