<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">33538</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>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">O bol'shikh podgrafakh grafa rasstoyaniy, imeyushchikh malen'koe khromaticheskoe chislo</article-title><trans-title-group xml:lang="ru"><trans-title>О больших подграфах графа расстояний, имеющих маленькое хроматическое число</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Kokotkin</surname><given-names>A. A.</given-names></name><name xml:lang="ru"><surname>Кокоткин</surname><given-names>А. А.</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Raygorodskiy</surname><given-names>A. M.</given-names></name><name xml:lang="ru"><surname>Райгородский</surname><given-names>А. М.</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en"></institution></aff><aff><institution xml:lang="ru">Московский физико-технический институт</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2013-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2013</year></pub-date><volume>51</volume><issue-title xml:lang="en">VOL 51, NO (2013)</issue-title><issue-title xml:lang="ru">ТОМ 51, № (2013)</issue-title><fpage>64</fpage><lpage>73</lpage><history><date date-type="received" iso-8601-date="2023-02-10"><day>10</day><month>02</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2013, Kokotkin A.A., Raygorodskiy A.M.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2013, Кокоткин А.А., Райгородский А.М.</copyright-statement><copyright-year>2013</copyright-year><copyright-holder xml:lang="en">Kokotkin A.A., Raygorodskiy A.M.</copyright-holder><copyright-holder xml:lang="ru">Кокоткин А.А., Райгородский А.М.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/33538">https://journals.rudn.ru/CMFD/article/view/33538</self-uri><abstract xml:lang="ru">В настоящей работе доказано, что в каждом дистанционном графе на плоскости есть индуцированный подграф, содержащий более 91 процента вершин исходного графа и имеющий хроматическое число, не большее четырех. С помощью этого результата найден порядок роста пороговой вероятности для свойства случайного графа быть изоморфным некоторому дистанционному графу на плоскости. Предложены обобщения результатов на другие размерности.</abstract></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Колчин В. Ф. Случайные графы. - М.: Физматлит, 2002.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Купавский А. Б., Райгородский А. М., Титова М. В. О плотнейших множествах без расстояния единица в пространствах малых размерностей// Тр. МФТИ. - 4, № 1. - 2012. - С. 91-110.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Райгородский А. М. Проблема Борсука и хроматические числа метрических пространств// Усп. мат. наук. - 2001. - 56, № 1. - С. 107-146.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Райгородский А. М. О хроматическом числе пространства// Усп. мат. наук. - 2000. - 55, № 2. - С. 147-148.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Райгородский А. М. Хроматические числа. - М.: МЦНМО, 2003.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Райгородский А. М. Линейно-алгебраический метод в комбинаторике. - М.: МЦНМО, 2007.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Райгородский А. М. Модели случайных графов. - М.: МЦНМО, 2011.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Сойфер А. Хроматическое число плоскости: его прошлое, настоящее и будущее// Мат. просвещ. - 2004. - 8.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Agarwal P. K., Pach J. Combinatorial geometry. - New York: John Wiley and Sons Inc., 1995.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Alon N., Spencer J. The probabilistic method. - Wiley-Interscience Ser. Discr. Math. Optim., 2000.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Bolloba´ s B. Random graphs. - Cambridge Univ. Press, 2001.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Brass P., Moser W., Pach J. Research problems in discrete geometry. - Springer, 2005.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Coulson D. A 15-colouring of 3-space omitting distance one// Discrete Math. - 2002. - 256. - С. 83-90.</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Croft H. T. Incident incidents// Eureka (Cambridge). - 1967. - 30. - С. 22-26.</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>De Bruijn N. G., Erdo˝s P. A colour problem for in nite graphs and a problem in the theory of relations// Proc. Koninkl. Nederl. Acad. Wet. Ser. A. - 54, № 5. - 1951. - С. 371-373.</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Janson S., Luczak T., Rucin´ ski A. Random graphs. - New York: Wiley, 2000.</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Klee V., Wagon S. Old and new unsolved problems in plane geometry and number theory. - Math. Association of America, 1991.</mixed-citation></ref><ref id="B18"><label>18.</label><mixed-citation>Larman D. G., Rogers C. A. The realization of distances within sets in Euclidean space// Mathematika. - 1972. - 19. - С. 1-24.</mixed-citation></ref><ref id="B19"><label>19.</label><mixed-citation>Nechushtan O. Note on the space chromatic number// Discrete Math. - 2002. - 256. - С. 499-507.</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Soifer A. The mathematical coloring book. - Springer, 2009.</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Sze´kely L. A., Erdo˝s P. On unit distances and the Szemere´di-Trotter theorems// Paul Erdo˝s and his Mathematics, Bolyai Series Budapest, J. Bolyai Math. Soc., Springer, 11. - 2002. - С. 649-666.</mixed-citation></ref></ref-list></back></article>
