<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">phmath-402</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>РАЗДЕЛ I. МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SECTION I. MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>СЕТИ ШТЕЙНЕРА С ПОДВИЖНОЙ ГРАНИЦЕЙ: СЛУЧАЙ ПРЯМОЙ И ПАРЫ ТОЧЕК</article-title><trans-title-group xml:lang="en"><trans-title>STEINER NETWORKS WITH A MOVING BOUNDARY: THE CASE OF A STRAIGHT LINE AND A PAIR OF POINTS</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>Птицына</surname><given-names>Инга Вячеславовна</given-names></name><name name-style="western" xml:lang="en"><surname>Ptitsyna</surname><given-names>I. V.</given-names></name></name-alternatives><email xlink:type="simple">inpt@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный областной университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Moscow State Regional University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>20</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>8</fpage><lpage>28</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Птицына И.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Птицына И.В.</copyright-holder><copyright-holder xml:lang="en">Ptitsyna I.V.</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://www.physmathmgou.ru/jour/article/view/402">https://www.physmathmgou.ru/jour/article/view/402</self-uri><abstract><p>Статья посвящена задаче построения минимальных сетей, связывающих дискретное множество точек и гладкую кривую или поверхность в евклидовом пространстве и явяется одним из обобщений проблемы Штейнера. В случае двух точек и прямой на евклидовой плоскости описаны множества расположений точек для всех типов абсолютно минимальных графов, а также минимальных остовных графов и графов Штейнера; вычислены длины всех видов минимальных графов и отношения длин графов Штейнера и длин минимальных остовных графов: множество таких отношений совпадает с множеством точек полуинтервала.</p></abstract><trans-abstract xml:lang="en"><p>The paper is devoted to the problem of constructing minimal networks spanning a discrete set of points and a smooth curve, or a surface in Euclidean space. The problem represents one of the generalizations of the Steiner problem. In the case of two points and a line in the Euclidean plane, we describe sets of points for all types of absolutely minimal graphs, as well as minimal spanning graphs and Steiner graphs; the lengths of all kinds of minimal graphs and ratio of the lengths of Steiner graphs to the lengths of the minimal spanning graphs are calculated: a set of such ratios coincides with the set of points in the interval.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>проблема Штейнера</kwd><kwd>остовный граф</kwd><kwd>граф Штейнера</kwd><kwd>точка Штейнера</kwd><kwd>отношение Штейнера</kwd><kwd>Steiner problem</kwd><kwd>spanning graph</kwd><kwd>Steiner graph</kwd><kwd>Steiner point</kwd><kwd>Steiner ratio</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">Иванов А.О., Тужилин А.А. Теория экстремальных сетей. Москва; Ижевск: Институт компьютерных исследований, 2003. С. 424.</mixed-citation><mixed-citation xml:lang="en">Иванов А.О., Тужилин А.А. Теория экстремальных сетей. Москва; Ижевск: Институт компьютерных исследований, 2003. С. 424.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">R. Booth, D.A. Thomas, and J.F. Weng, Shortest Networks for One line and Two Points in Space // Advances in Steiner Trees edited by Ding-Zhu, J.M. Smith and J.H. Rubinstein, Kluwer Academic Publishers, Boston, London, 2000. P. 15-27.</mixed-citation><mixed-citation xml:lang="en">R. Booth, D.A. Thomas, and J.F. Weng, Shortest Networks for One line and Two Points in Space // Advances in Steiner Trees edited by Ding-Zhu, J.M. Smith and J.H. Rubinstein, Kluwer Academic Publishers, Boston, London, 2000. P. 15-27.</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>
