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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">izvuzmath</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3446</issn><issn pub-type="epub">2076-4626</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/0021-3446-2023-12-90-94</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-35</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>Кольца, матрицы над которыми представимы в виде суммы двух потентных матриц</article-title><trans-title-group xml:lang="en"><trans-title>Rings, matrices over which are representable as the sum of two potent matrices</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>Абызов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Abyzov</surname><given-names>A. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Адель Наилевич Абызовул. Кремлевская, д. 18, г. Казань, 420008</p></bio><bio xml:lang="en"><p>Adel Nailevich Abyzov18 Kremlyovskaya str., Kazan, 420008 </p></bio><email xlink:type="simple">adel.abyzov@kpfu.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>Тапкин</surname><given-names>Д. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Tapkin</surname><given-names>D. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Даниль Тагирзянович Тапкин</p><p>ул. Кремлевская, д. 18, г. Казань, 420008</p></bio><bio xml:lang="en"><p>Danil’ Tagirzyanovich Tapkin</p><p>18 Kremlyovskaya str., Kazan, 420008 </p></bio><email xlink:type="simple">danil.tapkin@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский федеральный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan Federal University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>24</day><month>12</month><year>2023</year></pub-date><volume>1</volume><issue>12</issue><fpage>90</fpage><lpage>94</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Абызов А.Н., Тапкин Д.Т., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Абызов А.Н., Тапкин Д.Т.</copyright-holder><copyright-holder xml:lang="en">Abyzov A.N., Tapkin D.T.</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://izvuzmath.elpub.ru/jour/article/view/35">https://izvuzmath.elpub.ru/jour/article/view/35</self-uri><abstract><p>Исследуется проблема нахождения условий, при которых из представимости каждого элемента a из поля P в виде a = f + g, где f q1 = f, g q2 = g и q1, q2 — фиксированные натуральные числа &gt;1, следует аналогичная представимость каждой квадратной матрицы над полем P. Предложен общий подход к решению этой проблемы. В качестве приложения полученных результатов, в частности, описаны поля и коммутативные кольца с обратимой двойкой, над которыми каждая квадратная матрица является суммой двух 4-потентных матриц.</p></abstract><trans-abstract xml:lang="en"><p>This paper investigates conditions under which representability of each element a from the field P as the sum a = f + g, with f q1 = f, g q2 = g and q1, q2 are fixed integers &gt;1, implies a similar representability of each square matrix over the field P. We propose a general approach to solving this problem. As an application we describe fields and commutative rings with 2 is a unit, over which each square matrix is the sum of two 4-potent matrices. </p></trans-abstract><kwd-group xml:lang="ru"><kwd>q-потент</kwd><kwd>конечное поле</kwd><kwd>матрицы над конечными полями</kwd></kwd-group><kwd-group xml:lang="en"><kwd>q-potent</kwd><kwd>finite field</kwd><kwd>matrices over finite fields</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">Hirano Y., Tominaga H. Rings in which every element is the sum of two idempotents, Bull. Aust. Math. Soc. 37 (2), 161–164 (1988).</mixed-citation><mixed-citation xml:lang="en">Hirano Y., Tominaga H. Rings in which every element is the sum of two idempotents, Bull. Aust. Math. Soc. 37 (2), 161–164 (1988).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Tang G., Zhou Y., Su H. Matrices over a commutative ring as sums of three idempotents or three involutions, Linear Multilinear Algebra 67 (2), 267–277 (2019).</mixed-citation><mixed-citation xml:lang="en">Tang G., Zhou Y., Su H. Matrices over a commutative ring as sums of three idempotents or three involutions, Linear Multilinear Algebra 67 (2), 267–277 (2019).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Абызов А.Н., Мухаметгалиев М.И. О некоторых матричных аналогах малой теоремы Ферма, Матем. заметки 101 (2), 163–168 (2017).</mixed-citation><mixed-citation xml:lang="en">Абызов А.Н., Мухаметгалиев М.И. О некоторых матричных аналогах малой теоремы Ферма, Матем. заметки 101 (2), 163–168 (2017).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Абызов А.Н., Тапкин Д.Т. Кольца, матрицы над которыми представимы в виде суммы идемпотентной матриы и q-потентной матрицы, Сиб. матем. журн. 62 (1), 3–18 (2021).</mixed-citation><mixed-citation xml:lang="en">Абызов А.Н., Тапкин Д.Т. Кольца, матрицы над которыми представимы в виде суммы идемпотентной матриы и q-потентной матрицы, Сиб. матем. журн. 62 (1), 3–18 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Abyzov A.N., Tapkin D.T. When is every matrix over a ring the sum of two tripotents? Linear Algebra and Appl. 630 (3), 316–325 (2021).</mixed-citation><mixed-citation xml:lang="en">Abyzov A.N., Tapkin D.T. When is every matrix over a ring the sum of two tripotents? Linear Algebra and Appl. 630 (3), 316–325 (2021).</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
