Differential equations, Partial Differential equations 15 Numerical solutions 13 Bifurcation theory 5 Differential equations, Nonlinear 4 Asymptotic theory 3 Boundary value problems 3 Calculus of variations 3 Initial value problems 3 Mathematical optimization 3 Nonlinear operators 3 Partial differential operators 3 Pseudodifferential operators 3 Semigroups of operators 3 Singular perturbations (Mathematics) 3 Singularities (Mathematics) 3 Attractors (Mathematics) 2 Differential operators 2 Eigenvalues 2 Integral equations 2 Maximum principles (Mathematics) 2 Asymptotic expansions 1 Besov spaces 1 Biology 1 Biomathematics 1 Boundary element methods 1 Boundary layer 1 Control theory 1 Data processing 1 Differentiable dynamical systems 1