Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Darboux transformations and global solutions for a nonlocal derivative
  nonlinear Schrodinger equation   A nonlocal derivative nonlinear Schrodinger equation is introduced. By
constructing its basic Darboux transformations of degrees one and two, the
explicit expressions of new solutions are derived from seed solutions by
Darboux transformation of degree 2n. Usually the derived solutions of this
nonlocal equation may have singularities. However, by suitable choice of
eigenvalues and the parameters describing the ratio of the two entries of the
solutions of the Lax pair, global bounded solutions of the nonlocal derivative
nonlinear Schrodinger equation are obtained from zero seed solution by a
Darboux transformation of degree 2n.

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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
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The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org
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The categories of this paper are: acc-phys
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The categories of this paper are: math
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The categories of this paper are: physics
5
The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: dg-ga