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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2022-23-3-50-60</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1342</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Article</subject></subj-group></article-categories><title-group><article-title>О разложении действительных чисел по некоторым последовательностям</article-title><trans-title-group xml:lang="en"><trans-title>On an expansion real numbers on some sequences</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гияси</surname><given-names>Азар</given-names></name><name name-style="western" xml:lang="en"><surname>Giyasi</surname><given-names>Azar</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат физико-математических наук</p></bio><bio xml:lang="en"><p>candidate of physical and mathematical sciences</p></bio><email xlink:type="simple">azarghyasi@atu.ac.ir</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Михайлов</surname><given-names>Илья Петрович</given-names></name><name name-style="western" xml:lang="en"><surname>Mikhailov</surname><given-names>Ilya Petrovich</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чубариков</surname><given-names>Владимир Николавич</given-names></name><name name-style="western" xml:lang="en"><surname>Chubarikov</surname><given-names>Vladimir Nikolaevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук, профессор</p></bio><bio xml:lang="en"><p>Lomonosov Moscow State University</p></bio><email xlink:type="simple">chubarik2020@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет имени Алламе Табатабаи</institution><country>Иран</country></aff><aff xml:lang="en"><institution>Allameh Tabataba’i University</institution><country>Islamic Republic of Iran</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Казанский авиационный институт</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan Aviation Institute</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>doctor of physical and mathematical sciences, professor</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>19</day><month>12</month><year>2022</year></pub-date><volume>23</volume><issue>3</issue><fpage>50</fpage><lpage>60</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Гияси А., Михайлов И.П., Чубариков В.Н., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Гияси А., Михайлов И.П., Чубариков В.Н.</copyright-holder><copyright-holder xml:lang="en">Giyasi A., Mikhailov I.P., Chubarikov V.N.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.chebsbornik.ru/jour/article/view/1342">https://www.chebsbornik.ru/jour/article/view/1342</self-uri><abstract><p>В работе доказаны теоремы о разложении действительных чисел по мультипликативной системе чисел, по последовательности Фибоначчи и по целочисленной последовательности, удовлетворяющей рекуррентным соотношениям и связанной с числами Пизо–Виджаярагхавана. Особое внимание обращено на “явные формулы” и условия единственности таких представлений. Отметим, что единственность разложения действительногочисла по обратным значениям мультипликативной системы позволяет получить оценку вида$$𝑒 −Σ︁𝑛𝑘=0 1/𝑘!=𝑥𝑛/𝑛!, 1/𝑛 + 1≤ 𝑥𝑛 &lt;1/𝑛.$$Разложения чисел по последовательности обратных чисел Фибоначчи существенно использует их представление через степени “золотого сечения” 𝜙 = (1+√5)/2 .Системы чисел, связанные с числами Пизо-Виджаярагхавана рассмотрены менее подробно, поскольку требуется конкретизировать свойства рассматриваемых чисел.</p></abstract><trans-abstract xml:lang="en"><p>In this paper theorems on the expression of real numbers on multiplicative number system, Fibonacci sequence and integral valued sequences satisfiing recurrent correlations and connectedwith Pisot–Vidgajraghavan, are proven. It pay a special attention to “explicit formulas” and conditions of the uniqueness of such representations. We note that unifiing of an expression ofa real number over inverse values of a multiplicaticative system permits to get the estimation of the form</p><p>$$𝑒 −Σ︁𝑛𝑘=0 1/𝑘!=𝑥𝑛/𝑛!, 1/𝑛 + 1≤ 𝑥𝑛 &lt;1/𝑛.$$</p><p>Expressions of numbers over the sequence of inverse of Fibonacci numbers essentially uses these representation throw powers of “the gold section” 𝜙 = (1+√5)/2 .Systems numbers connected with Pisot–Vidgajraghavana were considered less than in details, as demands to make a properties of examinated numbers more concrete.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мультипликативная система чисел</kwd><kwd>последовательность Фибоначчи.</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Hardy G. H., Littlewood J. E. The fractional part of 𝑛𝑘𝜃.// Acta math., 1914, 37.</mixed-citation><mixed-citation xml:lang="en">Hardy G. H., Littlewood J. E. 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