Geometry & Topology

Computing $\widehat{\mathit{HF}}$ by factoring mapping classes

Robert Lipshitz, Peter S Ozsváth, and Dylan P Thurston

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Bordered Heegaard Floer homology is an invariant for 3–manifolds with boundary. In particular, this invariant associates to a handle decomposition of a surface F a differential graded algebra, and to an arc-slide between two handle decompositions, a bimodule over the two algebras. In this paper, we describe these bimodules for arc-slides explicitly, and then use them to give a combinatorial description of HF̂ of a closed 3–manifold, as well as the bordered Floer homology of any 3–manifold with boundary.

Article information

Geom. Topol., Volume 18, Number 5 (2014), 2547-2681.

Received: 1 July 2011
Revised: 18 September 2013
Accepted: 16 February 2014
First available in Project Euclid: 20 December 2017

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Mathematical Reviews number (MathSciNet)

Zentralblatt MATH identifier

Primary: 57M27: Invariants of knots and 3-manifolds
Secondary: 53D40: Floer homology and cohomology, symplectic aspects

Heegaard Floer homology mapping class group arc-slides


Lipshitz, Robert; Ozsváth, Peter S; Thurston, Dylan P. Computing $\widehat{\mathit{HF}}$ by factoring mapping classes. Geom. Topol. 18 (2014), no. 5, 2547--2681. doi:10.2140/gt.2014.18.2547.

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