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JOURNALS // Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika // Archive

1990, Number 11


The best polynomial approximation of analytic functions of one and two complex variables
S. B. Vakarchuk
3
Convergence of Fourier-Walsh series in the $L^1$ metric and almost everywhere
M. G. Grigoryan
9
A criterion for spherical convergence of Fourier transforms of monotone functions of two variables
M. I. Dyachenko
18
Conjugate points of left-invariant metrics on Lie groups
V. V. Kaiser
27
The Riemann boundary value problem on a curve with nonuniform twisting
B. A. Kats
38
A criterion for $L_p$-summability of Fourier series by Cesàro methods of negative order
A. I. Kudryavtsev, G. S. Survillo
47
Sufficient conditions for optimality for continuous stochastic control systems on the basis of an incomplete state vector
A. V. Panteleev
50
Uniform continuity and limit sets of monotone mappings of class $L^1_n$
B. V. Sokolov
61
A method for removing the multivalence of analytic functions
S. Ya. Khavinson
64

Brief communications
A class of primary block designs
S. N. Adamov, A. N. Fomin
73
$K$-spaces and the spaces $V(K)$
A. V. Aminova
75
Commutativity of the $K$-method of interpolation
V. V. Vodop'yanov
78
The spectrum of a $C^*$-algebra of Fourier multipliers in a cone
A. Yu. Kokotov
80
An analogue of Dolbeault cohomology for varieties over the algebra of dual numbers
M. A. Malakhaltsev
82
Transformations of spaces with affine connection that preserve a linear complex of geodesics
A. M. Mukhamedov
84


© Steklov Math. Inst. of RAS, 2026