Asymptotic theory Differential equations 5 Mathematical physics 3 Mathematical statistics 3 Perturbation (Mathematics) 3 Differential equations, Linear 2 Differential equations, Nonlinear 2 mer ... Differential equations, Partial 2 Integral equations 2 Addresses, essays, lectures 1 Asymptotic distribution (Probability theory) 1 Boundary layer 1 Boundary value problems 1 Congresses 1 Differential equations, Hyperbolic 1 Differential equations, Parabolic 1 Econometrics 1 Edgeworth expansions 1 Factorization (Mathematics) 1 Finite element method 1 Functional differential equations 1 Heat 1 Hydrodynamics 1 Mass transfer 1 Mathematical models 1 Phase transition (Statistical physics) 1 Ships 1 Singular perturbations (Mathematics) 1 Transmission 1 Transport theory 1 mindre ...