34M15 Algebraic aspects (differential-algebraic, hypertranscendence, group-theoretical) of ordinary differential equations in the complex domain 357
34M25 Formal solutions and transform techniques for ordinary differential equations in the complex domain 276
34M30 Asymptotics and summation methods for ordinary differential equations in the complex domain 226
34M35 Singularities, monodromy and local behavior of solutions to ordinary differential equations in the complex domain, normal forms 1012
34M40 Stokes phenomena and connection problems (linear and nonlinear) for ordinary differential equations in the complex domain 340
34M50 Inverse problems (Riemann-Hilbert, inverse differential Galois, etc.) for ordinary differential equations in the complex domain 260
34M55 Painlevé and other special ordinary differential equations in the complex domain; classification, hierarchies 1940
34M60 Singular perturbation problems for ordinary differential equations in the complex domain (complex WKB, turning points, steepest descent) [See also 34E20] 271
34M65 Topological structure of trajectories of ordinary differential equations in the complex domain 2