Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Riemann-Hilbert problem and the generalized Neumann kernel on
  unbounded multiply connected regions   A Fredholm integral equation of the second kind with the generalized Neumann
kernel associated with the Riemann-Hilbert problem on unbounded multiply
connected regions will be derived and studied in this paper. The derived
integral equation yields a uniquely solvable boundary integral equations for
the modified Dirichlet problem on unbounded multiply connected regions.

17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
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The categories of this paper are: stat
28
The categories of this paper are: alg-geom
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
1
The categories of this paper are: cs
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The categories of this paper are: nucl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
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The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci