<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:dc="http://purl.org/dc/elements/1.1/">
<title>Журнал математической физики, анализа, геометрии, 2005, № 1</title>
<link href="http://dspace.nbuv.gov.ua:80/handle/123456789/106555" rel="alternate"/>
<subtitle/>
<id>http://dspace.nbuv.gov.ua:80/handle/123456789/106555</id>
<updated>2026-04-19T00:30:22Z</updated>
<dc:date>2026-04-19T00:30:22Z</dc:date>
<entry>
<title>90 лет Александру Яковлевичу Повзнеру</title>
<link href="http://dspace.nbuv.gov.ua:80/handle/123456789/106569" rel="alternate"/>
<author>
<name/>
</author>
<id>http://dspace.nbuv.gov.ua:80/handle/123456789/106569</id>
<updated>2016-10-01T00:02:06Z</updated>
<published>2005-01-01T00:00:00Z</published>
<summary type="text">90 лет Александру Яковлевичу Повзнеру
27 июня исполнилось 90 лет выдающемуся математику Александру Яковлевичу Повзнеру.
</summary>
<dc:date>2005-01-01T00:00:00Z</dc:date>
</entry>
<entry>
<title>Totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold</title>
<link href="http://dspace.nbuv.gov.ua:80/handle/123456789/106568" rel="alternate"/>
<author>
<name>Yampolsky, A.</name>
</author>
<id>http://dspace.nbuv.gov.ua:80/handle/123456789/106568</id>
<updated>2016-10-01T00:02:05Z</updated>
<published>2005-01-01T00:00:00Z</published>
<summary type="text">Totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold
Yampolsky, A.
We give a full description of totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold of constant curvature and present a new class of a cylinder-type totally geodesic submanifolds in the general case.
</summary>
<dc:date>2005-01-01T00:00:00Z</dc:date>
</entry>
<entry>
<title>On controllability problems for the wave equation on a half-plane</title>
<link href="http://dspace.nbuv.gov.ua:80/handle/123456789/106567" rel="alternate"/>
<author>
<name>Fardigola, L.V.</name>
</author>
<id>http://dspace.nbuv.gov.ua:80/handle/123456789/106567</id>
<updated>2016-10-01T00:01:43Z</updated>
<published>2005-01-01T00:00:00Z</published>
<summary type="text">On controllability problems for the wave equation on a half-plane
Fardigola, L.V.
Necessary and sufficient conditions for null-controllability and approximate null-controllability are obtained for the wave equation on a half-plane. Controls solving these problems are found explicitly. Moreover bang-bang controls solving the approximate null-controllability problem are constructed with the aid of the Markov power moment problem.
</summary>
<dc:date>2005-01-01T00:00:00Z</dc:date>
</entry>
<entry>
<title>О комплексной проблеме моментов на радиальных лучах</title>
<link href="http://dspace.nbuv.gov.ua:80/handle/123456789/106566" rel="alternate"/>
<author>
<name>Загороднюк, С.М.</name>
</author>
<id>http://dspace.nbuv.gov.ua:80/handle/123456789/106566</id>
<updated>2016-10-03T10:13:34Z</updated>
<published>2005-01-01T00:00:00Z</published>
<summary type="text">О комплексной проблеме моментов на радиальных лучах
Загороднюк, С.М.
The complex moment problem in the case when the support of the measure lies on the algebraic curves PN = {z є C : z^N-ž^N = 0}, N = 1, 2, 3,..., is studied. For N = 2, 3 the necessary and sufficient conditions of solvability are obtained and all solutions of the problem are described. It is shown how this problem for arbitrary N is connected with the Hamburger moment problem with parameters.; Изучается комплексная проблема моментов в том случае, когда но- ситель меры сосредоточен на алгебраических кривых PN = {z є C : z^N-ž^N = 0},, N=1, 2, 3... . Для N = 2, 3 получены необходимые и достаточные условия разрешимости и описаны все решения задачи. Показано, как данная задача для произвольного N связывается с проблемой моментов Гамбургера с параметрами.
</summary>
<dc:date>2005-01-01T00:00:00Z</dc:date>
</entry>
</feed>
