Floer homologies for Lagrangian intersections and instantons
Geometric Topology
2016-09-06 v1
Abstract
In 1985 lectures at MSRI, A. Casson introduced an interesting integer valued invariant for any oriented integral homology 3-sphere Y via beautiful constructions on representation spaces (see [1] for an exposition). The Casson invariant \lambda(Y) is roughly defined by measuring the oriented number of irreducible representations of the fundamental group \pi_1(Y) in SU(2). Such an invariant generalized the Rohlin invariant and gives surprising corollaries in low dimensional topology.
Cite
@article{arxiv.math/9506221,
title = {Floer homologies for Lagrangian intersections and instantons},
author = {Ronnie Lee and Weiping Li},
journal= {arXiv preprint arXiv:math/9506221},
year = {2016}
}