Difference equations Numerical solutions 9 Mathematical models 5 Numerical weather forecasting 5 Numerical analysis 4 Differential equations 3 Functional equations 2 Heat 2 Laplace transformation 2 Mathematical physics 2 Transmission 2 Baroclinic models 1 Boundary value problems 1 Calculus 1 Data processing 1 Differential equations, Partial 1 Digital control systems 1 Discrete-time systems 1 Elasticity 1 Equations, Simultaneous 1 Finite differences 1 Finite element method 1 Fluid dynamics 1 Functional analysis 1 Groundwater flow 1 Hydrodynamics 1 Integral equations 1 Invariant imbedding 1 Linear systems 1 Mathematical optimization 1