... Section 1 . ... Some features of solving the problems of mapping for allocation of chemical elements on stellar surfaces as ill-posed problems with the use of multiprocessor systems . A.V. Skvortsov . ... Iterative processes for nonlinear ill-posed operator equations in Banach spaces on the basis of finite-dimensional regularization of the Newton-Kantorovich method . ... A class of stable iterative methods for solving nonlinear ill-posed operator equations . ...