Content of Volume 26, no.4, 2020


Author(s) Title of the Article  Page 
V.V. Arestov, R.R. AkopyanStechkins problem on the best approximation of an unbounded operator by bounded ones and related problems
7
R.R. AkopyanAnalog of the Hadamard theorem and related extremal problems on the class of analytic functions
32
B.I. Anan'ev, P.A. YurovskihApproximation of a guaranteed estimation problem with mixed constraints
48
A.G. Babenko, Yu. KryakinOn the norms of Boman--Shapiro difference operators
64
V.I. BerdyshevAn object moving in $\bR^2$ with a high-speed destructive miniobject and an unfriendly solid observer
76
Yu.S. VolkovEuler polynomials in the problem of extremal functional interpolation in the mean
83
M.P. GolubyatnikovDistance-regular graphs with intersection arrays {104,70,25;1,7,80} and {272,210,49;1,15,224} do not exist
98
M.I. GomoyunovMinimax solutions of homogeneous Hamilton-Jacobi equations with fractional-order coinvariant derivatives
106
D.V. Gorbachev, I.A. Mart'yanovBounds of the Nikol'skii polynomial constants in $L^{p}$ with Gegenbauer weight
126
V.I. IvanovChebyshev's problem on extremal values of moments of nonnegative algebraic polynomials
138
N.A. Il'yasovSome supplements to S.B. Stechkin's inequalities in direct and inverse theorems on the approximation of continuous periodic functions
155
S.V. Konyagin, A.Yu. ShadrinOn stable reconstruction of analytic functions from Fourier samples
182
A. KroóOn a refinement of Marcinkiewicz-Zygmund type inequalities
196
S.I. Novikov, V.T. ShevaldinExtremal interpolation on the semiaxis with the smallest norm of the third derivative
210
E.A. PleschevaInterpolating orthogonal bases of an MRA and wavelets
224
V.M. Sinitsin, A.I. SozutovOn the connection of some groups generated by 3-transpositions with Coxeter groups
234
D.S. Telyakovskii, S.A. TelyakovskiiGeometric approach to finding constrained extrema
244
N.I. ChernykhPeriodic wavelets on a multidimensional sphere and their application for function approximation
255
M.Sh. Shabozov, O.A. DzhurakhonovUpper estimates for bestmean-square approximations for some classes of bivariate functions by Fourier-Chebyshev sums
268
D.A. YamkovoiHarmonic interpolating wavelets in the Neumann boundary value problem in a ring
279
V.I. Berdyshev, V.V. Arestov, M.V. Deikalova, S.V. Konyagin, D.S. TelyakovskiiOn the International Workshop-Conference on Function Theory Dedicated to the Centenary of the Birth of S.B. Stechkin
290