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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">matatecs</journal-id><journal-title-group><journal-title xml:lang="ru">Математика и теоретические компьютерные науки</journal-title><trans-title-group xml:lang="en"><trans-title>Mathematics and Theoretical Computer Science</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2949-3919</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/2949-3919.2024.1.94-108</article-id><article-id custom-type="elpub" pub-id-type="custom">matatecs-41</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></article-categories><title-group><article-title>Некоторые свойства классов минимальных нумераций семейств арифметических множеств</article-title><trans-title-group xml:lang="en"><trans-title>Some properties of classes of minimal numberings of arithmetical set families</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>Нодиров</surname><given-names>Ш. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Nodirov</surname><given-names>Sh. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шохрух Дилмуродович Нодиров </p><p>ул. Кучабаг, д. 17, г. Карши, 180119 </p></bio><bio xml:lang="en"><p>Shohruh Dilmurodovich Nodirov </p><p>17 Kuchabag str., Karshi 180119 </p></bio><email xlink:type="simple">shoh0809@mail.ru</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>Файзрахманов</surname><given-names>М. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Faizrahmanov</surname><given-names>M. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Марат Хайдарович Файзрахманов </p><p>ул. Кремлевская, д. 18, г. Казань, 420008 </p></bio><bio xml:lang="en"><p>Marat Khaidarovich Faizrahmanov </p><p>18 Kremlyovskaya str., Kazan 420008 </p></bio><email xlink:type="simple">marat.faizrahmanov@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Каршинский государственный университет<country>Узбекистан</country></aff><aff xml:lang="en">Karshi State University<country>Uzbekistan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru">Казанский (Приволжский) федеральный университет, Научно-образовательный математический центр ПФО<country>Россия</country></aff><aff xml:lang="en">Kazan Federal University, Volga Region Mathematical Center<country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>15</day><month>04</month><year>2024</year></pub-date><volume>2</volume><issue>1</issue><fpage>94</fpage><lpage>108</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Нодиров Ш.Д., Файзрахманов М.Х., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Нодиров Ш.Д., Файзрахманов М.Х.</copyright-holder><copyright-holder xml:lang="en">Nodirov S.D., Faizrahmanov M.K.</copyright-holder><license 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://matatecs.elpub.ru/jour/article/view/41">https://matatecs.elpub.ru/jour/article/view/41</self-uri><abstract><p>Доказано, что для каждого u ⩾ 2 класс всех однозначных Σ0 uвычислимых нумераций любого бесконечного семейства всюду определенных функций эффективно бесконечен и класс всех его Σ0 u-1-вычислимых нумераций порождается замыканием вниз относительно сводимости множества всех бесконечных прямых сумм равномерно Σ0 u-1-вычислимых последовательностей его однозначных нумераций. Установлено, что если u &gt; 2, то класс всех Σ0 u-вычислимых нумераций любого бесконечного семейства порождается бесконечными прямыми суммами равномерно Σ0 u-вычислимых и равномерно Σ0 uминимальных последовательностей его нумераций.</p></abstract><trans-abstract xml:lang="en"><p>We prove that for each u ⩾ 2 the class of all single-valued Σ0 ucomputable numberings of any infinite family of total functions is effectively infinite and the class of all its Σ0 u-1-computable numberings is generated by the downward closure with respect to the reducibility of the set of all infinite direct sums of uniformly Σ0 u-1-computable sequences of its single-valued numberings. It is established that if u &gt; 2, then the class of all Σ0 u-computable numberings of any infinite family is generated by infinite direct sums of uniformly Σ0 u-computable and uniformly Σ0 u-minimal sequences of its numberings.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>вычислимая нумерация</kwd><kwd>однозначная нумерация</kwd><kwd>минимальная нумерация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>computable numbering</kwd><kwd>single-valued numbering</kwd><kwd>minimal numbering</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">Ю.Л. Ершов, Теория нумераций, Наука, М., 1977.</mixed-citation><mixed-citation xml:lang="en">Yu.L. Ershov, Theory of numberings, Nauka, M., 1977 [in Russian.].</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Yu.L. Ershov, Theory of numberings, in: E.R. 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