Global Surgery Formula for the Casson-Walker Invariant. (AM-140), Volume 140

This book presents a new result in 3-dimensional topology.

It is well known that any closed oriented 3-manifold can be obtained by surgery on a framed link in S 3. In Global Surgery Formula for the Casson-Walker Invariant, a function F of framed links in S 3 is described, and it is proven that F consistently defines an invariant, lamda (l), of closed oriented 3-manifolds. l is then expressed in terms of previously known invariants of 3-manifolds.

For integral homology spheres, l is the invariant introduced by Casson in 1985, which allowed him to solve old and famous questions in 3-dimensional topology. l becomes simpler as the first Betti number increases. As an explicit function of Alexander polynomials and surgery coefficients of framed links, the function F extends in a natural way to framed links in rational homology spheres. It is proven that F describes the variation of l under any surgery starting from a rational homology sphere. Thus F yields a global surgery formula for the Casson invariant.

Global Surgery Formula for the Casson-Walker Invariant.

Book Details

• Author: Christine Lescop
• Publisher: Princeton University Press
• eBook ISBN: 9781400865154, 1400865158
• Print ISBN: 9780691021331, 0691021333
• Other ISBNs: 0691021325, 9780691021324