Research articles

• Coapproximation of functions convex on a disk by algebraic polynomials

  V. G. Budnik

  1115–1122

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• On the best polynomial approximation of entire transcendental functions in banach spaces. I

  S. B. Vakarchuk

  1123–1133

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  • Springer
• On generalized resolvents of Hermitian operators in Krein spaces

  V. A. Derkach

  1134–1147

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  • Springer
• Construction of asymptotic representations of solutions from the classL?? for systems of differential equations by the method of characteristic matrix functions

  N. N. Ivanyuk

  1148–1155

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  • Springer
• Informativeness of functionals

  N. P. Korneichuk

  1156–1163

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  • Springer
• Essential normality of some classes of operators in infinite tensor products of Hilbert spaces

  V. O. Livinskii

  1164–1170

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  • Springer
• Bogolyubov averaging and normalization procedures in nonlinear mechanics. I

  A. K. Lopatin, Yu. A. Mitropolskiy

  1171–1188

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• Three-dimensional initial boundary-value problem of the convection of a viscous weakly compressible fluid. II. Uniqueness and stability of generalized solutions

  V. B. Moseenkov

  1189–1202

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• Groups satisfying the condition of weak minimality for subgroups of derived length two

  V. A. Onishchuk

  1203–1207

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  • Springer
• Optimal rates of convergence of some iterative approximation methods for the solution of fredholm equations in spaces of periodic analytic functions

  M. Askarov, S. V. Pereverzev

  1208–1215

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  • Springer
• Reducibility of nonlinear almost periodic systems of difference equations on an infinite-dimensional torus

  D. I. Martynyuk, N. A. Perestyuk, A. M. Samoilenko

  1216–1223

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  • Springer
• Approximation of differentiable functions by polynomial splines in domains with external peaks

  V. B. Semenyuk

  1224–1233

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  • Springer
• Approximation method for the problems of mechanics of inhomogeneous hereditarily elastic bodies

  E. S. Sinaiskii

  1234–1245

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• Optimization of direct methods for the approximate solution of weakly singular integral equations

  A. N. Urumbaev

  1246–1254

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• Some applications of the comparison principle in the theory of perturbed systems

  E. V. Voskresenskii

  1255–1260

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• Exact constant in the Jackson inequality in the space L₂

  V. G. Doronin, A. A. Ligun

  1261–1265

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• On monotone and convex approximation by algebraic polynomials

  K. A. Kopotun, V. V. Listopad

  1266–1270

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• On the rate of convergence of double series of exponents representing regular functions on products of convex polygons

  Yu. I. Mel'nik

  1271–1274

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  • Springer
• Construction of one-frequency solutions of boundary-value problems for a nonautonomous wave equation

  B. I. Sokil

  1275–1279

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  • Springer
• Groups with the minimality condition for infinitely generated subgroups

  V. P. Shaptala

  1280–1282

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  • Springer
• Dzyadyk formula for summation of double Faber series

  M. M. Tsvil'

  1283–1287

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  • Springer