Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced group classification of Gardner equations with time-dependent
  coefficients   We classify the Lie symmetries of variable coefficient Gardner equations
(called also the combined KdV-mKdV equations). In contrast to the particular
results presented in Molati and Ramollo (2012) we perform the exhaustive group
classification. It is shown that the complete result can be achieved using
either the gauging of arbitrary elements of class by the equivalence
transformations or the method of mapping between classes. As by-product of the
second approach the complete group classification of a class of variable
coefficient mKdV equations with forcing term is derived. Advantages of the use
of the generalized extended equivalence group in comparison with the usual one
are also discussed.

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The categories of this paper are: alg-geom
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The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
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The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga
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The categories of this paper are: acc-phys
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The categories of this paper are: plasm-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-ex