Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Group Analysis via Weak Symmetries For Benjamin-Bona-Mahony Equation   In this paper, weak symmetries of the Benjamin-Bona-Mahony (BBM) equation
have been investigated. Indeed, this method has been performed by applying the
non-classical symmetries of the BBM equation and the infinitesimal generators
of the classical symmetry algebra of the KdV equation as the starting
constraints. Similarity reduced equations as well as some exact solutions of
the BBM equation are obtained via this method.

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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: nucl-ex
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The categories of this paper are: nlin
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: chao-dyn
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The categories of this paper are: funct-an
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: physics