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http://hdl.handle.net/11701/14887
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Поле DC | Значение | Язык |
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dc.contributor.author | Silvanovich, Olga V. | - |
dc.contributor.author | Shirokov, Nikolai A. | - |
dc.date.accessioned | 2018-09-18T11:43:28Z | - |
dc.date.available | 2018-09-18T11:43:28Z | - |
dc.date.issued | 2018-09 | - |
dc.identifier.citation | Silvanovich O.V., Shirokov N.A. Approximation by entire functions on a countable union of segments on the real axis. 4. Inverse theorem. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 2018, vol. 5 (63), issue 3, pp. 441–451. | en_GB |
dc.identifier.other | 10.21638/11701/spbu01.2018.308 | - |
dc.identifier.uri | http://hdl.handle.net/11701/14887 | - |
dc.description.abstract | A problem of a constructive description of functional classes in terms of a possible rate of approximation of its functions by means of functions chosen from a certain set is one of the leading problem of approximation theory for more than a century. It turned out that the non-uniformity of a rate of approximation due to the point of a set where a functional class is defined is a rather usual circumstance of those description. One of the possible test for approximation is a question whether the rate of it permits to recognise the functional class under consideration. We have investigated approximation of classes of smooth functions on a countable union segments on the real axis by means of entire functions of exponential type. The present paper is devoted to a proof of the so-called inverse theorem, i. e. to the finding out a scale of smoothness of functions with the help of a rate of its approximation by entire functions. | en_GB |
dc.language.iso | ru | en_GB |
dc.publisher | St Petersburg State University | en_GB |
dc.relation.ispartofseries | Vestnik of St Petersburg University. Mathematics. Mechanics. Astronomy;Volume 5(63); Issue 3 | - |
dc.subject | smooth functions | en_GB |
dc.subject | entire functions | en_GB |
dc.subject | approximation | en_GB |
dc.title | Approximation by entire functions on a countable union of segments on the real axis. 4. Inverse theorem | en_GB |
dc.type | Article | en_GB |
Располагается в коллекциях: | Issue 3 |
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08-Silvanovich.pdf | 314,02 kB | Adobe PDF | Просмотреть/Открыть |
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