Vol 51 No 11 (1999) | Ukrains’kyi Matematychnyi Zhurnal

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Published: 25.11.1999

Research articles

Parametrix method for a parabolic equation on a Riemannian manifold

V. G. Bondarenko

1443–1448
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- Springer
On the boundedness of the total variation of the logarithm of a Blaschke product

Ya. V. Kondratyuk

1449–1455
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- Springer
On the best approximation of classes $W^r H^{ω}$ by algebraic polynomials in the space $L_1$

A. M. Kogan

1456-1466
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- Springer
A singularly perturbed spectral problem for a biharmonic operator with Neumann conditions

A. S. Lavrent'ev

1467–1475
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- Springer
Stability analysis with respect to two measures of impulsive systems under structural perturbations

A. A. Martynyuk, I. P. Stavroulakis

1476–1484
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On convergence classes of Dirichlet series

O. M. Mulyava

1485–1494
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Approximation of one class of differentiable functions by piecewise-HermitianL-splines

S. I. Novikov

1495–1504
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- Springer
Approximation of continuous functions defined on the real axis by generalized Zygmund operators

О. V. Ostrovskaya

1505–1512
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Investigation of invariant deformations of integral manifolds of adiabatically perturbed completely integrable Hamiltonian systems. II

Ya. A. Prykarpatsky, A. M. Samoilenko

1513–1528
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- Springer
Almost layer finiteness of a periodic group without involutions

V. I. Senashov

1529–1533
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A priori estimates of solutions of linear parabolic problems with coefficients from Sobolev spaces

I. B. Romanenko, I. V. Skrypnik

1534–1548
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Approximation of locally integrable functions on the real line

O. I. Stepanets, Kunyang Wang, Xirong Zhang

1549–1561
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Short communications

On the existence of solutions for a differential inclusion of fractional order with upper-semicontinuous right-hand side

A. N. Vityuk

1562–1565
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- Springer
Quasiconformal mappings and radii of normal systems of neighborhoods

A. L. Gol'berg

1566–1568
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On synchronization of symmetrically perturbed systems with quadratic nonlinearity

V. A. Dobrynskii

1569–1573
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- Springer
On a smooth solution of a nonlinear periodic boundary-value problem

V. A. Dobrynskii

1574–1576
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On the extension of even-positive-definite functions of one and two variables

O. V. Lopotko

1577–1581
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- Springer
Differentiability of integrals of real functions with respect to $L_0$-valued measures

V. N. Radchenko

1582-1585
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- Springer