Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Duality Transformations in the Ten-Dimensional Action and New
  Superstring Theories   Type II superstring theory with mixed Dirichlet and Neumann boundary
conditions admit antisymmetric tensors with varying degrees in the spectrum. We
show that there exists a family of dual supergravity lagrangians to the $N=2$
type IIA action in ten dimensions. The duality transformations and the
resulting actions are constructed explicitely.

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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
4
The categories of this paper are: cond-mat
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
3
The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol