Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Indefinite theta series of signature (1,1) from the point of view of
  homological mirror symmetry   We apply the homological mirror symmetry for elliptic curves to the study of
indefinite theta series. We prove that every such series corresponding to a
quadratic form of signature (1,1) can be expressed in terms of theta series
associated with split quadratic forms and the usual theta series. We also show
that indefinite theta series corresponding to univalued Massey products between
line bundles on elliptic curve are modular.

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The categories of this paper are: q-alg
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: atom-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: adap-org
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The categories of this paper are: q-fin
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: nucl-th