Geometry & Topology
- Geom. Topol.
- Volume 23, Number 4 (2019), 2005-2050.
Finite type invariants of knots in homology $3$–spheres with respect to null LP–surgeries
We study a theory of finite type invariants for nullhomologous knots in rational homology –spheres with respect to null Lagrangian-preserving surgeries. It is an analogue in the setting of the rational homology of the Garoufalidis–Rozansky theory for knots in integral homology –spheres. We give a partial combinatorial description of the graded space associated with our theory and determine some cases when this description is complete. For nullhomologous knots in rational homology –spheres with a trivial Alexander polynomial, we show that the Kricker lift of the Kontsevich integral and the Lescop equivariant invariant built from integrals in configuration spaces are universal finite type invariants for this theory; in particular, this implies that they are equivalent for such knots.
Geom. Topol., Volume 23, Number 4 (2019), 2005-2050.
Received: 5 November 2017
Revised: 13 September 2018
Accepted: 15 November 2018
First available in Project Euclid: 16 July 2019
Permanent link to this document
Digital Object Identifier
Mathematical Reviews number (MathSciNet)
Zentralblatt MATH identifier
Primary: 57M27: Invariants of knots and 3-manifolds
Moussard, Delphine. Finite type invariants of knots in homology $3$–spheres with respect to null LP–surgeries. Geom. Topol. 23 (2019), no. 4, 2005--2050. doi:10.2140/gt.2019.23.2005. https://projecteuclid.org/euclid.gt/1563242524