Some estimates of the rate of summability of orthogonal series by linear means A. V. Efimov OriginalPaper Pages: 650 - 654
A generalization of a theorem of M. Riesz to the case of functions of several variables L. V. Zhizhiashvili OriginalPaper Pages: 655 - 661
Approximation of differentiable functions by partial sums of their Fourier series S. A. Telyakovskii OriginalPaper Pages: 668 - 673
Sufficient conditions that the minimum and maximum of partial differential operators should coincide and that their spectra should be discrete M. G. Gimadislamov OriginalPaper Pages: 674 - 679
The convergence of a new iteration process for the solution of nonlinear functional equations in banach space D. K. Lika OriginalPaper Pages: 680 - 685
Nonsymmetrical distance between probability distributions, entropy and the theorem of pythagoras N. N. Chentsov OriginalPaper Pages: 686 - 691
Isomorphisms of free decompositions of Г-operator groups with a regular group of operators Г V. A. Artamonov OriginalPaper Pages: 705 - 707
On the existence of stably nilpotent subgroups in locally nilpotent groups D. I. Zaitsev OriginalPaper Pages: 708 - 712
