Grid approximation of optimal control problems for semilinear elliptic equations with discontinuous coefficients and solutions, with offices in the coefficients of the highest derivatives

Discusses and examines the mathematical formulation of nonlinear optimal control problems for semilinear elliptic equations with discontinuous coefficients and solutions, with offices in the coefficients of the highest derivatives. Built difference approximation of extremal problems, establish estimates of the accuracy of the approximations on the condition and functionality, proved weak convergence of approximations. Held regularization approximations on Tikhonov.