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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">10.26907/0021-3446-2025-9-81-100</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-223</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>Об одном семействе копул, частично совпадающих с границами Фреше-Хёффдинга</article-title><trans-title-group xml:lang="en"><trans-title>On a family of copulas partially coinciding with the Frechet–Hoeffding boundaries</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>Ширяева</surname><given-names>Л. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Shiryaeva</surname><given-names>L. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Людмила Константиновна Ширяеваул. Московское шоссе, д. 34, г. Самара, 443086</p></bio><bio xml:lang="en"><p>Ludmila Konstantinovna Shiryaeva34 Moskovskoe High., Samara, 443086</p></bio><email xlink:type="simple">Shiryeva_LK@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Самарский национальный исследовательский университет им. академика С.П. Королева</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Samara National Research University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>11</day><month>10</month><year>2025</year></pub-date><volume>1</volume><issue>9</issue><fpage>81</fpage><lpage>100</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ширяева Л.К., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ширяева Л.К.</copyright-holder><copyright-holder xml:lang="en">Shiryaeva L.K.</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/223">https://izvuzmath.elpub.ru/jour/article/view/223</self-uri><abstract><p>Изучаются статистики теста Граббса, т. е. абсолютные величины экстремальных стьюдентизированных отклонений n случайных наблюдений от среднего. Рассматривается случай, когда случайные наблюдения имеют произвольные непрерывные маргинальные распределения. Доказывается существование двух областей: в одной из них совместная функция распределения этих статистик есть линейная функция от их маргинальных функций распределения, в другой она обращается в нуль. Из совместного распределения статистик Граббса строится копула Граббса. Доказывается, что в случае n&gt;3 копула Граббса совпадает с нижней границей Фреше-Хёффдинга в двух подмножествах единичного квадрата. В случае n=3 копула Граббса является нижней границей Фреше-Хёффдинга. Повернутая на 180∘ версия копулы Граббса также частично совпадает с нижней границей Фреше-Хёффдинга (в случае n&gt;3) и является нижней границей Фреше-Хёффдинга (случай n=3). Доказывается, что повернутые на 90∘ и 270∘ версии копулы Граббса частично совпадают с верхней границей Фреше-Хёффдинга (в случае n&gt;3) и становятся верхней границей Фреше-Хёффдинга (случай n=3).</p></abstract><trans-abstract xml:lang="en"><p>The Grubbs's test statistics are studied, i.e. absolute values of extreme studentized deviations of n random observations from the mean. We consider the case when random observations have arbitrary continuous marginal distributions. The existence of two regions is proved; in one of them, the joint distribution function of these statistics is a linear function of their marginal distribution functions, and in the other, the joint distribution function is zero. We construct a Grubbs’s copula from the joint distribution of Grubbs’s statistics. For the case n&gt;3, the existence of two domains within the unit square in which the Grubbs's copula coincides with the lower Frechet-Hoeffding boundary is proved. In the case of n=3, the Grubbs's copula is the Frechet-Hoeffding lower bound. The Grubbs's copula rotated by 180∘ also partially coincides with the Frechet-Hoeffding lower bound (in the case of n&gt;3) and is the Frechet-Hoeffding lower bound (in the case of n=3). We prove that Grubbs's copulas rotated by 90∘ and 270∘ partially coincide with the Frechet-Hoeffding upper bound (in the case of n&gt;3) and become the Frechet-Hoeffding upper bound (in the case n=3).</p></trans-abstract><kwd-group xml:lang="ru"><kwd>экстремальные стьюдентизированные отклонения случайных наблюдений от среднего</kwd><kwd>копула</kwd><kwd>носитель копулы</kwd><kwd>несингулярная копула</kwd><kwd>нижняя граница Фреше–Хёффдинга</kwd><kwd>верхняя граница Фреше–Хёффдинга</kwd><kwd>повернутая версия копулы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>extreme studentized deviations of observations from the mean</kwd><kwd>copula</kwd><kwd>support of a copula</kwd><kwd>nonsingular copula</kwd><kwd>Frechet-Hoeffding lower bound</kwd><kwd>Frechet-Hoeffding upper bound</kwd><kwd>rotated version of a copula</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">Genest C., Favre A.-C. 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