Differential equations 187 Numerical solutions 113 Differential equations, Partial 98 Integral equations 52 Congresses 48 Difference equations 36 Boundary value problems 31 Differential equations, Nonlinear 29 Equations 23 Mathematical models 23 Differential equations, Linear 22 Mathematical physics 17 Equations, Simultaneous 16 Functional equations 16 Differential equations, Elliptic 15 Data processing 14 Stochastic differential equations 14 Finite element method 12 Functional analysis 12 Approximation theory 11 Mathematics 11 Numerical analysis 11 Stability 11 Asymptotic expansions 10 Asymptotic theory 10 Equations, Theory of 10 Inverse problems (Differential equations) 10 Nonlinear theories 10 Engineering mathematics 7 Numerical weather forecasting 7