Vol 50 No 11 (1998) | Ukrains’kyi Matematychnyi Zhurnal

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Published: 25.11.1998

Research articles

The best $L_1$-approximations of classes of functions defined by differential operators in terms of generalized splines from these classes

V. F. Babenko, Azar Leis

1443-1451
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- Springer
On one proof of the classical solvability of the Hele-Shaw problem with free boundary

B. V. Bazalii

1452–1462
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- Springer
On the Levy-Baxter theorems for shot-noise fields. I

V. V. Buldygin, V. M. Mel'nik, V. G. Shportyuk

1463–1476
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- Springer
Uniqueness theorems for multiple lacunary trigonometric series

V. V. Volchkov

1477–1481
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- Springer
Properties of the fundamental solutions and uniqueness theorems for the solutions of the Cauchy problem for one class of ultraparabolic equations

S. D. Ivasyshen, V. S. Drotn'

1482–1496
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- Springer
Groups all proper quotient groups of which possess layer-Chernikov properties

N. V. Kalashnikova

1497–1505
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- Springer
Approximation of solutions of operator-differential equations by operator polynomials

A. I. Kashpirovskii, Yu. V. Mytnik

1506–1516
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- Springer
Random oscillations in the Van der Pol system under the action of a broadband random process

Yu. A. Mitropolskiy, Dyk Tin Nguen, Dong An Nguyen

1517–1521
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- Springer
On the noncompactness of classes of mappings with restrictions on dilation in measure

V. L. Potemkin, V. I. Ryazanov

1522–1531
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- Springer
Structure of locally graded CDN (]-groups

N. N. Semko

1532–1536
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- Springer
Linear periodic boundary-value problem for a second-order hyperbolic equation. I

N. H. Khoma

1537–1544
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- Springer
Quotient groups of locally graded groups and groups of certain Kurosh-Chernikov classes

D. Ya. Trebenko, N. S. Chernikov

1545–1553
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- Springer

Short communications

Space-time localization in one-dimensional problems with free boundary for nonlinear second-order equations

Kh. R. Bittiev

1554–1558
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- Springer
A new class of compact spherical spaces

Yu. V. Dzyadyk

1559–1563
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- Springer
Paley-Wiener-type theorem for nilpotent Lie groups

V. V. Kisil'

1564–1566
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- Springer
Stable solutions of a system of two connected Chua cells

I. L. Nizhnik

1567–1569
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- Springer
Hausdorff diameter of a nonsymmetric class of vector functions

A. A. Polovina

1570–1573
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- Springer
Riquier problem for a nonlinear equation resolved with respect to the iterated Levi Laplacian

M. N. Feller

1574–1577
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- Springer
On the London theorem concerning the Borel relation for entire functions

P. V. Filevych

1578–1580
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- Springer
Numerical-analytic method for the investigation of multipoint boundary-value problems for systems of differential equations with transformed argument

Ya. I. Bigun, M. P. Filipchuk

1581–1584
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- Springer