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Rostislav Ivanovich Grigorchuk (Ukrainian: Ростисла́в Iва́нович Григорчу́к; b. February 23, 1953) is a mathematician working in different areas of mathematics including group theory, dynamical systems, geometry and computer science. He holds the rank of Distinguished Professor in the Mathematics Department of Texas A&M University. Grigorchuk is particularly well known for having constructed, in a 1984 paper, the first example of a finitely generated group of intermediate growth, thus answering an important problem posed by John Milnor in 1968. This group is now known as the Grigorchuk group and it is one of the important objects studied in geometric group theory, particularly in the study of branch groups, automaton groups and iterated monodromy groups. Grigorchuk is one of the pioneers of

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  • Rostyslaw Hryhortschuk (de)
  • Rostislav Grigorchuk (fr)
  • Rostislav Grigorchuk (en)
  • Rostislav Grigorchuk (pt)
  • Григорчук, Ростислав Иванович (ru)
  • Григорчук Ростислав Іванович (uk)
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  • Rostislav Ivanovich Grigorchuk (en russe : Ростисла́в Ива́нович Григорчу́к, né le 23 février 1953) est un mathématicien soviétique et russe travaillant dans le domaine de la théorie des groupes. Il occupe depuis 2008 un poste de distinguished professor dans le département de mathématiques de l'Université A&M du Texas. Grigorchuk est particulièrement renommé pour avoir construit, dans un article paru en 1984, le premier exemple d'un groupe finiment engendré à « croissance intermédiaire ». Il répond par là à un problème posé par John Milnor en 1968. Ce groupe est maintenant connu sous le nom de groupe de Grigorchuk. Il intervient en théorie géométrique des groupes, en particulier dans l'étude des groupes automatiques et des groupes de monodromie itérés. (fr)
  • Rostislav Ivanovich Grigorchuk (em ucraniano: Ростислав Івaнович Григорчук, em russo: Ростисла́в Ива́нович Григорчу́к; Oblast de Ternopil, 23 de fevereiro de 1953) é um matemático soviético e ucraniano. Trabalha na área da teoria de grupos. É Distinguished Professor do Departamento de Matemática da Texas A&M University. Em 2012 foi eleito fellow da American Mathematical Society. Recebeu o Prêmio Leroy P. Steele de 2015. (pt)
  • Ростислав Иванович Григорчук (укр. Ростислав Іванович Григорчук; род. 23 февраля 1953) — математик, работающий в области теории групп. Стал широко известен после работы 1984 года, в которой построил первый пример конечнопорождённой группы, степень роста которой была ни полиномиальной, ни экспоненциальной, дав тем самым отрицательно решение проблемы, сформулированной Джоном Милнором в 1968 году. Этот пример теперь называется группой Григорчука и является важным объектом геометрической теории групп. (ru)
  • Ростисла́в Іва́нович Григорчу́к (нар. 23 лютого 1953, с. Вишнівець) Збаразький район, Тернопільська область, Україна) — математик, що працює в області теорії груп. (uk)
  • Rostyslaw Iwanowytsch Hryhortschuk (ukrainisch Ростисла́в Іва́нович Григорчу́к, russisch Ростислав Иванович Григорчук, Rostislaw Iwanowitsch Grigortschuk, englische Transkription Rostislav Grigorchuk; * 23. Februar 1953 in (heute im Wyschniwez), Rajon Sbarasch, Oblast Ternopil, USSR, heute Ukraine) ist ein sowjetischer und russischer Mathematiker ukrainischer Herkunft. Er ist Professor an der Texas A&M University. Er befasste sich auch mit Irrfahrten (Random Walk) auf Gruppen und Mittelbaren Gruppen (Amenable Groups). Er ist Herausgeber von Groups, Geometry and Dynamics. (de)
  • Rostislav Ivanovich Grigorchuk (Ukrainian: Ростисла́в Iва́нович Григорчу́к; b. February 23, 1953) is a mathematician working in different areas of mathematics including group theory, dynamical systems, geometry and computer science. He holds the rank of Distinguished Professor in the Mathematics Department of Texas A&M University. Grigorchuk is particularly well known for having constructed, in a 1984 paper, the first example of a finitely generated group of intermediate growth, thus answering an important problem posed by John Milnor in 1968. This group is now known as the Grigorchuk group and it is one of the important objects studied in geometric group theory, particularly in the study of branch groups, automaton groups and iterated monodromy groups. Grigorchuk is one of the pioneers of (en)
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  • Rostislav Ivanovich Grigorchuk (en)
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  • Rostislav Ivanovich Grigorchuk (en)
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