%0 Journal Article
%T Lescop's Invariant and Gauge Theory
%A Prayat Poudel
%J Mathematics
%D 2013
%I arXiv
%X Taubes proved that the Casson invariant of an integral homology 3-sphere equals half the Euler characteristic of its instanton Floer homology. We extend this result to all closed oriented 3-manifolds with positive first Betti number by establishing a similar relationship between the Lescop invariant of the manifold and its instanton Floer homology. The proof uses surgery techniques.
%U http://arxiv.org/abs/1304.3070v2