Bimodules in bordered Heegaard Floer homology

Details Bimodules in bordered Heegaard Floer homology Bimodules in bordered Heegaard Floer homology

2010-03-02

arxiv.org/abs/1003.0598v3

Mathematics

Geometric Topology

153 pages, 29 figures; v3: Changed orientation conventions for mapping cylinders

Scientific paper

Bordered Heegaard Floer homology is a three-manifold invariant which associates to a surface F an algebra A(F) and to a three-manifold Y with boundary identified with F a module over A(F). In this paper, we establish naturality properties of this invariant. Changing the diffeomorphism between F and the boundary of Y tensors the bordered invariant with a suitable bimodule over A(F). These bimodules give an action of a suitably based mapping class group on the category of modules over A(F). The Hochschild homology of such a bimodule is identified with the knot Floer homology of the associated open book decomposition. In the course of establishing these results, we also calculate the homology of A(F). We also prove a duality theorem relating the two version of the 3-manifold invariant. Finally, in the case of a genus one surface, we calculate the mapping class group action explicitly. This completes the description of bordered Heegaard Floer homology for knot complements in terms of the knot Floer homology.

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