Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bordered Heegaard Floer homology and graph manifolds   We perform two explicit computations of bordered Heegaard Floer invariants.
The first is the type D trimodule associated to the trivial S^1 bundle over the
pair of pants P. The second is a bimodule that is necessary for self-gluing,
when two torus boundary components of a bordered manifold are glued to each
other. Using the results of these two computations, we describe an algorithm
for computing HF-hat of any graph manifold.

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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: math-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: econ