Vol. 23 No. 2 (1971)

Anniversaries

Mstislav Vsevolodovich Keldysh (On his 60th birthday)

218-220
- PDF (Russian)

Research articles

On the averaging principle for hyperbolic second order equations with a functionally disturbed argument

D. G. Korenevsky

147-156
- PDF (Russian)
The problem of interpolation between factor-spaces

Yu. I. Petunin

157-167
- PDF (Russian)
Reversion of linear operators disturbed on the spectrum

Ya. D. Plotkin, A. F. Turbin

168-176
- PDF (Russian)
On asymptotic representation of solutions for a system of linear partial differential equations with time lag

S. F. Feshchenko, N. I. Shkіl, N. A. Sоtnіchenkо

177-189
- PDF (Russian)
Properties of $\varphi$ -transformations of graphs and 2-manifolds

N. P. Khomenko, E. B. Yavorsky

190-200
- PDF (Russian)
Quality in extremal problems

M. M. Tsvetanov

201-217
- PDF (Russian)

Short communications

On application of some modifications of S. A. Chaplygin’s method to Cauchy’s limit problems

I. I. Bezvershenko

221-229
- PDF (Russian)
Solution in finite-difference stating of boundary value problems for one equation of elliptical type

I. M. Velikoivanenko, I. I. Lyashko, G. E. Mistetsky

229-235
- PDF (Russian)
On one method to construct normal in A. N. Tikhonov’s sense of linear equations

V. K. Dzуadуk

235-239
- PDF (Russian)
On weak convergence in the Orlich spaces

B. D. Kotlyar

240-244
- PDF (Russian)
Dynamic systems with peculiar trajectories

N. N. Ladіs

244-248
- PDF (Russian)
On closeness of distributions of two Markovian sums of random variables without a condition of limit neglections

A. N. Litvinov, I. I. Repin

248-253
- PDF (Russian)
On one attribute of solution stability for systems of non-linear differential equations

A. A. Martynyuk

253-257
- PDF (Russian)
On application of the averaging method to the solution of one non-linear integro-differential equation with small parameter of hyperbolic type

T. V. Melіkіdze

257-261
- PDF (Russian)
Determination of unknown parameters under conformal mapping of the upper half-plane on an arbitrary circular quadrangle

L. M. Nepritvorennaya

261-268
- PDF (Russian)
Concerning the demonstration of one theorem of Grunbaum

A. Ya. Petrenyuk

268-269
- PDF (Russian)
Generalized sums for characters and their applications to the reciprocity laws

I. V. Reshetukha

270-276
- PDF (Russian)
Some theorems on stable convexity of closed curves under one-sheeted mappings

N. I. Cherneі

276-280
- PDF (Russian)

Obituaries

Yuri Dmitrievich Sokolov

Yu. A. Mitropolsky, N. S. Kurpel, A.Yu. Luchka, V. N. Shevelo

281
- PDF (Russian)

Anniversaries

Mstislav Vsevolodovich Keldysh (On his 60th birthday)

Research articles

On the averaging principle for hyperbolic second order equations with a functionally disturbed argument

The problem of interpolation between factor-spaces

Reversion of linear operators disturbed on the spectrum

On asymptotic representation of solutions for a system of linear partial differential equations with time lag

Properties of $\varphi$ -transformations of graphs and 2-manifolds

Quality in extremal problems

Short communications

On application of some modifications of S. A. Chaplygin’s method to Cauchy’s limit problems

Solution in finite-difference stating of boundary value problems for one equation of elliptical type

On one method to construct normal in A. N. Tikhonov’s sense of linear equations

On weak convergence in the Orlich spaces

Dynamic systems with peculiar trajectories

On closeness of distributions of two Markovian sums of random variables without a condition of limit neglections

On one attribute of solution stability for systems of non-linear differential equations

On application of the averaging method to the solution of one non-linear integro-differential equation with small parameter of hyperbolic type

Determination of unknown parameters under conformal mapping of the upper half-plane on an arbitrary circular quadrangle

Concerning the demonstration of one theorem of Grunbaum

Generalized sums for characters and their applications to the reciprocity laws

Some theorems on stable convexity of closed curves under one-sheeted mappings

Obituaries

Yuri Dmitrievich Sokolov

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