A note on the topological sliceness of some 2-bridge knots

Authors :: Miller, Allison N.
Publication Year :: 2015
Abstract: We use twisted Alexander polynomials to show that certain algebraically slice 2-bridge knots are not topologically slice, even though all prime power Casson-Gordon signatures vanish. We also provide some computations indicating the efficacy of Casson-Gordon signatures in obstructing the smooth sliceness of 2-bridge knots.<br />Comment: 7 pages