-widths for singularly perturbed problems
-widths for singularly perturbed problems
Kolmogorov -widths are an approximation theory concept that, for a given problem, yields information about the optimal rate of convergence attainable by any numerical method applied to that problem. We survey sharp bounds recently obtained for the -widths of certain singularly perturbed convection-diffusion and reaction-diffusion boundary value problems.
Navier–Stokes regularization of multidimensional Euler shocks
Nonlinear symmetric positive systems
Non-Stationary Burgers Flows with Vanishing Viscosity in Bounded Domains of IR3.