Let q(x) be real-valued compactly supported su ciently smooth function. It is proved that the scattering data A(−¯, ¯, k) 8¯ 2 S2, 8k > 0, determine q uniquely.

The convergence of families of linear polynomial operators with kernels generated by matrices of multipliers is studied in the scale of the Lp-spaces with 0 < p · +1. An element an, k of generating matrix is represented ...

We establish estimates sharp in order for the Kolmogorov and linear widths of the classes Bsm p q ( Tk) and Lsm p q (Tk) of Nikol'skii-Besov, Lizorkin-Triebel types respectively, in the space Lr(Tk) for a certain range ...

An iterative scheme containing two asymptotically nonexpansive mappings has been used in this paper to approximate common xed points in a strictly convex Banach space. This improves and extends some known recent results ...