Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Riemann-Hilbert Approach to the Complex Sharma-Tasso-Olver Equation on
  the Half Line   In this paper, we use the Fokas method to analyze the complex
Sharma-Tasso-Olver(cSTO) equation on the half line. We show that it can be
represented in terms of the solution of a matrix RHP formulated in the plane of
the complex spectral parameter {\lambda}.

25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
33
The categories of this paper are: plasm-ph
6
The categories of this paper are: astro-ph
12
The categories of this paper are: nucl-th
30
The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
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The categories of this paper are: eess
11
The categories of this paper are: hep-lat
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The categories of this paper are: stat
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The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
24
The categories of this paper are: dg-ga