Research articles

• On the rate of convergence of methods of projection-iterative type for Fredholm equations with periodic analytic kernels

  M. Askarov

  1155–1161

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  • Springer
• On finite $A$-groups with complementable nonmetacyclic subgroups

  P. P. Baryshovets

  1162–1169

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  • Springer
• Onn-widths of bounded periodic holomorphic functions

  К. Wilderotter

  1170–1175

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  • Springer
• Canonical spectral equation for empirical covariance matrices

  V. L. Girko

  1176–1189

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  • Springer
• Approximation of functions of two variables by harmonic splines

  V. T. Klimenko

  1190-1196

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  • Springer
• Boundary-value problems for differential equations unsolvable with respect to the higher time derivative

  L. I. Komarnyts'ka, B. I. Ptashnik

  1197–1208

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  • Springer
• On construction of asymptotic solution of the perturbed Klein-Gordon equation

  Yu. A. Mitropolskiy

  1209-1216

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  • Springer
• On quadrature formulas with equal coefficients

  V. P. Motornyi

  1217–1223

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• Diffusion with irregular drift in a Hilbert space

  M. M. Osipchuk

  1224–1230

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  • Springer
• On direct methods for solution of regularized equations

  S. V. Pereverzev, S. G. Solodkii

  1231–1242

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  • Springer
• On a method for construction of successive approximations for investigation of multipoint boundary-value problems

  N. A. Perestyuk, A. M. Ronto

  1243–1253

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  • Springer
• A method for solution of nonlinear ordinary differential equations

  E. L. Perchik

  1254–1260

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  • Springer
• On the best approximation of classes of convolutions of periodic functions by trigonometric polynomials

  A. S. Serdyuk

  1261–1265

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  • Springer
• Inverse theorems on approximation of periodic functions

  O. I. Stepanets

  1266–1273

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  • Springer
• On uniform approximations of almost periodic functions by entire functions of finite degree

  M. F. Timan

  1274–1279

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  • Springer
• On optimal control over quasilinear systems

  M. V. Trigub

  1280–1294

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  • Springer
• Stability of differential systems with rational right-hand sides

  D. Ya. Khusainov, V. N. Shevelo

  1295–1299

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  • Springer
• An approach to the investigation of optimal quadrature formulas for singular integrals with fixed singularity

  M. Sh. Shabozov

  1300–1304

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  • Springer