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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Digital Economy &amp; Innovations</journal-id><journal-title-group><journal-title xml:lang="en">Digital Economy &amp; Innovations</journal-title><trans-title-group xml:lang="ru"><trans-title>Цифровая экономика и инновации</trans-title></trans-title-group></journal-title-group><issn publication-format="print">3034-2074</issn><issn publication-format="electronic">3034-4204</issn><publisher><publisher-name xml:lang="en">Togliatti State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">568</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">SOLVING RISK CONDITIONS OPTIMIZATION PROBLEM IN PORTFOLIO MODELS</article-title><trans-title-group xml:lang="ru"><trans-title>РЕШЕНИЕ ПРОБЛЕМЫ ОПТИМИЗАЦИИ УСЛОВИЙ РИСКА В МНОГОПОРТФЕЛЬНОЙ МОДЕЛИ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nazari</surname><given-names>Reza Ibrahim</given-names></name><name xml:lang="ru"><surname>Назари</surname><given-names>Реза Ибрагим</given-names></name></name-alternatives><address><country country="IR">Iran, Islamic Republic of</country></address><bio xml:lang="en"><p>lecturer, associate professor of accounting of the chair «Accounting»</p></bio><bio xml:lang="ru"><p>преподаватель, адъюнкт-профессор кафедры «Бухгалтерский учет»</p></bio><email>Nazari@iaut.ac.ir</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Mamedov</surname><given-names>Kamil Salam</given-names></name><name xml:lang="ru"><surname>Мамедов</surname><given-names>Камиль Салман оглу</given-names></name></name-alternatives><address><country country="AZ">Azerbaijan</country></address><bio xml:lang="en"><p>associate professor of the chair «Economic informatics»</p></bio><bio xml:lang="ru"><p>доцент кафедры «Экономическая информация»</p></bio><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tabriz branch, Islamic Azad University, Tabriz</institution></aff><aff><institution xml:lang="ru">Тебризское отделение университета Азад Ислам, Тебриз</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Baku State University, Baku</institution></aff><aff><institution xml:lang="ru">Бакинский государственный университет, Баку</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2010-12-30" publication-format="electronic"><day>30</day><month>12</month><year>2010</year></pub-date><issue>3</issue><issue-title xml:lang="ru"/><fpage>26</fpage><lpage>29</lpage><history><date date-type="received" iso-8601-date="2022-11-15"><day>15</day><month>11</month><year>2022</year></date><date date-type="accepted" iso-8601-date="2022-11-15"><day>15</day><month>11</month><year>2022</year></date></history><permissions><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://vektornaukieconomika.ru/jour/article/view/568">https://vektornaukieconomika.ru/jour/article/view/568</self-uri><abstract xml:lang="en"><p>In this paper formation model of stock portfolios M from N is studied in order to minimize the total risk of all portfolios. In this study, it is assumed that risk of each stock portfolio is expressed by definite function. This function depends only on invested amount for portfolio formation, and total risk is a function of risks of separated portfolios. The discussed model is a non-linear minimization bi-parametric model which can be converted into one parametric minimization problem for certain varieties of objective.</p></abstract><trans-abstract xml:lang="ru"><p>В данной статье проанализировано <italic>m</italic> число инвестиционных запасов, которые включают минимум общего риска среди <italic>n</italic>-числа запасов. В этом случае предполагается, что риск каждого запаса i, который принадлежит набору j, связан с этими запасами зависимой функцией до степени указанных инвестиций. Полный риск всех запасов - функция риска всех запасов в отдельности. Эта проблема включает би-параметрическую нелинейную проблему оптимизации, и этого достаточно, чтобы сделать вывод о том, как фактор одного параметрического оптимума может быть определен для специального типа цели.</p></trans-abstract><kwd-group xml:lang="en"><kwd>stock portfolio</kwd><kwd>risk</kwd><kwd>goals matrix</kwd><kwd>aggregation</kwd><kwd>non-descending function</kwd><kwd>definite recurrent function</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>запасы капитала</kwd><kwd>акции</kwd><kwd>риск</kwd><kwd>матрица целей, агрегация убывания функции</kwd><kwd>определенные периодические функции</kwd><kwd>периодические уравнения</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1.	N. Markwitz. (1952, March). Portfolio selection, Finance magazine, Volume 7, 77-91.</mixed-citation><mixed-citation xml:lang="ru">N. Markwitz. (1952, March). 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