Finite type invariants of rational homology 3-spheres
arXiv:1203.1603 · doi:10.2140/agt.2012.12.2389
Abstract
We consider the rational vector space generated by all rational homology spheres up to orientation-preserving homeomorphism, and the filtration defined on this space by Lagrangian-preserving rational homology handlebody replacements. We identify the graded space associated with this filtration with a graded space of augmented Jacobi diagrams.