Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Benney-Roskes/Zakharov-Rubenchik System: Lie Symmetries and Exact
  Solutions   We investigate Lie symmetry algebra of the Benney-Roskes/Zakharov-Rubenchik
systems. The invariance algebra turns out to be infinite-dimensional. We also
find several exact solutions of periodic, line-soliton and stationary types.

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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: math-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: cs
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The categories of this paper are: hep-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph