Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Meromorphic solutions of higher order Briot-Bouquet differential
  equations   For differential equations $P(y^{(k)},y)=0,$ where $P$ is a polynomial, we
prove that all meromorphic solutions having at least one pole are elliptic
functions, possibly degenerate.

34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
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The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg