Some basic statements of the theory of the approximation of differential operators with partial derivatives by other differential operators with partial derivatives are given. The approximated and approximating operators ...

The dynamics of traveling waves for a system of parabolic equations of the van-der-Pol type with small diffusion on a circle with radius r is studied. The existence, interaction, asymptotic form, and stability of these ...

For some subspaces of the weight L1-space, the existence of a solution of the normal boundary-value problem for a quasilinear parabolic system with generalized functions from the space (C∞)´ given on the boundary of a ...