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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Archiving and Interchange DTD with OASIS Tables with MathML3 v1.4 20241031//EN" "https://jats.nlm.nih.gov/archiving/1.4/JATS-archive-oasis-article1-4-mathml3.dtd">
<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" dtd-version="1.4" article-type="brief-report" xml:lang="en"><front><journal-meta><journal-title-group><journal-title xml:lang="ru">Математическая физика и компьютерное моделирование</journal-title></journal-title-group><issn publication-format="print">2587-6325</issn><issn publication-format="electronic">2587-6902</issn></journal-meta><article-meta><article-id pub-id-type="doi">10.15688/mpcm.jvolsu.2023.3.9</article-id><article-categories><subj-group><subject>Other</subject></subj-group></article-categories><title-group><article-title xml:lang="ru">Разные системы координат и периодичность</article-title><trans-title-group xml:lang="en"><trans-title>Different Coordinate Systems and Periodicity</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Павлов</surname><given-names>Андрей Валерианович</given-names></name><name xml:lang="en"><surname>Pavlov</surname><given-names>Andrey V.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/><email>avpavlovmgu@my-post.ru</email><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1082-2222</contrib-id></contrib><aff-alternatives id="aff1"><aff xml:lang="en"><institution>Moscow Institute of Radiotechnics, Electronics and Automatics — RTU (Moscow, Russian Federation)</institution></aff><aff xml:lang="ru"><institution>Московский институт радиотехники, электроники и автоматики — РТУ (Москва, Российская Федерация)</institution></aff></aff-alternatives></contrib-group><pub-date pub-type="epub" iso-8601-date="2023-10-24"><day>24</day><month>10</month><year>2023</year></pub-date><volume>26</volume><issue>3</issue><fpage>113</fpage><lpage>118</lpage><history><date date-type="received" iso-8601-date="2023-04-25"><day>25</day><month>04</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-07-06"><day>06</day><month>07</month><year>2023</year></date></history><permissions><license xlink:href="https://creativecommons.org/licenses/by-nc/4.0/" xlink:title="CC BY-NC 4.0"><ali:license_ref>https://creativecommons.org/licenses/by-nc/4.0/</ali:license_ref><license-p xml:lang="ru">CC BY-NC 4.0</license-p></license></permissions><abstract xml:lang="ru"><p>Доказано, что в относительно общих условиях после введения новой системы координат с центром в точке (−A, 0) уравнения аналитической функции f(p) в двух системах координат возможны только в случае периодичности исходной функции. Аналогичный результат получен для произвольных функций двух переменных. Приведен пример двух обратных функций с точки зрения новой системы координат. Для широкого класса функций доказана теорема о равенстве нулю на действительной оси аналитичной в некоторой открытой области этой оси функции.</p></abstract><abstract xml:lang="en" abstract-type="summary"><p>In the article we consider a two new systems of coordinate for the p,w complex variables. The centers of coordinates of the systems are located in the (0, 0), (−A, 0) points, A &gt; 0. With point of view of the centers we obtain some new equations of the (p, f(p)) set of points for the f(p) function. The consideration of the equations results in periodicity of the f(p) function, if the f(p) function is regular in some open G set of points. Similar theorems are proved for the irregular functions. The example of two reverse functions for a new system of coordinates is resulted. The theorem is proved about the f(p) = 0 equality for wide class of regular functions, if Im p = 0.</p></abstract><kwd-group xml:lang="ru"><kwd>регулярная функция</kwd><kwd>периодичность аналитической функции</kwd><kwd>двойное представление функций</kwd><kwd>разные системы координат</kwd><kwd>сдвинутые функции</kwd></kwd-group><kwd-group xml:lang="en"><kwd>regular function</kwd><kwd>periodicity of analitic function</kwd><kwd>double representation of functions</kwd><kwd>different coordinate systems</kwd><kwd>moved functions</kwd></kwd-group></article-meta></front><back><ref-list><ref id="ref1"><mixed-citation publication-type="other" xml:lang="ru">Лаврентьев, М. А. Методы теории функций комплексного переменного / М. А. Лаврентьев, Б. В. Шабат. — М. : Наука, 1987. — 688 c.</mixed-citation></ref><ref id="ref2"><mixed-citation publication-type="other" xml:lang="ru">Павлов, А. В. Отражение регулярных функций / А. В. 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