Differential equations Mathematics 53 Numerical solutions 40 Boundary value problems 17 Differential equations, Partial 16 Congresses 7 Differential equations, Linear 7 Mathematical models 7 Numerical analysis 7 Calculus of variations 6 Data processing 6 Engineering mathematics 6 Calculus 5 Algebras, Linear 4 Asymptotic theory 4 Fractional differential equations 4 Functions 4 Hilbert space 4 Integral equations 4 Lie groups 4 Mathematical physics 4 Matrices 4 Stability 4 Linear algebra 3 Linear equations 3 MATHEMATICS / Differential Equations 3 Mechanics 3 Partial differential equations 3 Perturbation (Mathematics) 3 Vectors 3