nonlinear ordinary differential equations 32 differential equations 6 boundary value problems 6 ordinary differential equations 4 partial differential equations 3 dynamic systems 3 asymptotic approximation 2 more ... elliptic equations 2 one real variable functions 2 functional analysis 2 mathematical analysis 2 mathematical physics 2 mathematical models 2 nonlinear systems 2 numerical solution of equations 2 equations ma 2 simulation and modelling 2 Laplace equation 1 Sobolev spaces 1 time series analysis 1 applied mathematics 1 approximation by rational functions 1 asymptotic expansions 1 bifurcation 1 boards 1 linear ordinary differential equations 1 dynamics of plasma 1 functions 1 complex variable function 1 harmonic analysis 1 less ...