Mathematical Sciences Classification System
34Mxx - Differential equations in the complex domain 
[See also  30Dxx,  32G34]
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                            34M03Linear equations and systems
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                            34M05Entire and meromorphic solutions
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                            34M10Oscillation, growth of solutions
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                            34M15Algebraic aspects (differential-algebraic, hypertranscendence, group-theoretical)
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                            34M20Nonanalytic aspects
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                            34M25Formal solutions, transform techniques
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                            34M30Asymptotics, summation methods
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                            34M35Singularities, monodromy, local behavior of solutions, normal forms
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                            34M40Stokes phenomena and connection problems (linear and nonlinear)
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                            34M45Differential equations on complex manifolds
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                            34M50Inverse problems (Riemann-Hilbert, inverse differential Galois, etc.)
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                            34M55Painlevé and other special equations; classification, hierarchies;
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                            34M56Isomonodromic deformations
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                            34M60Singular perturbation problems in the complex domain (complex WKB, turning points, steepest descent) [See also 34E20]
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                            34M99None of the above, but in this section