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László Rédei (15 November 1900 – 21 November 1980) was a Hungarian mathematician. Rédei graduated from the University of Budapest and initially worked as a schoolteacher. In 1940 he was appointed professor in the University of Szeged and in 1967 moved to the Mathematical Institute of the Hungarian Academy of Sciences in Budapest. Rédei was the president of the János Bolyai Mathematical Society (1947–1949). He was awarded the Kossuth Prize twice. He was elected corresponding member (1949), full member (1955) of the Hungarian Academy of Sciences.

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  • László Rédei (Rákoskeresztúr, 15 de novembre de 1900 - Budapest, 21 de novembre de 1980) (o Ladislaus Redei, quan signava en alemany) va ser un matemàtic hongarès. (ca)
  • László RÉDEI [lAslO], hungare Rédei László estis hungara matematikisto, profesoro, membro de Hungara Scienca Akademio (ekde 1955). László Rédei naskiĝis la 15-an de novembro 1900 en Rákoskeresztúr (nuntempa Rákosmente). Li mortis la 21-an de novembro 1980 en Budapeŝto. (eo)
  • László Rédei (auch als Ladislaus Rédei zitiert; * 15. November 1900 in Rákoskeresztúr, jetzt Teil von Budapest; † 21. November 1980 in Budapest) war ein ungarischer Mathematiker, der sich mit Algebra (insbesondere Gruppentheorie und Theorie der Halbgruppen) und algebraischer Zahlentheorie beschäftigte. (de)
  • László Rédei (parfois cité comme Ladislas Rédei ; né le 15 novembre 1900 à Rákoskeresztúr, maintenant partie de Budapest ; mort le 21 novembre 1980 à Budapest) est un mathématicien hongrois spécialisé en algèbre (en particulier la théorie des groupes et la théorie des demi-groupes) et en théorie algébrique des nombres. (fr)
  • László Rédei (15 November 1900 – 21 November 1980) was a Hungarian mathematician. Rédei graduated from the University of Budapest and initially worked as a schoolteacher. In 1940 he was appointed professor in the University of Szeged and in 1967 moved to the Mathematical Institute of the Hungarian Academy of Sciences in Budapest. His mathematical work was in algebraic number theory and abstract algebra, especially group theory. He proved that every finite tournament contains an odd number of Hamiltonian paths. He gave several proofs of the theorem on quadratic reciprocity. He proved important results concerning the invariants of the class groups of quadratic number fields. In several cases, he determined if the ring of integers of the real quadratic field Q(√d) is Euclidean or not. He successfully generalized Hajós's theorem. This led him to the investigations of lacunary polynomials over finite fields, which he eventually published in a book. This work on lacunary polynomials has had a big influence in the field of finite geometry where it plays an important role in the theory of blocking sets. He introduced a very general notion of skew product of groups, of which both the Schreier-extension and the Zappa–Szép product are special case. He explicitly determined those finite noncommutative groups whose all proper subgroups were commutative (1947). This is one of the very early results which eventually led to the classification of all finite simple groups. Rédei was the president of the János Bolyai Mathematical Society (1947–1949). He was awarded the Kossuth Prize twice. He was elected corresponding member (1949), full member (1955) of the Hungarian Academy of Sciences. (en)
  • László Rédei (Rákoskeresztúr, 15 novembre 1900 – Budapest, 21 novembre 1980) è stato un matematico ungherese.Ha dato uno dei più importanti contributi alla teoria dei semigruppi commutativi finitamente generati. (it)
  • László Rédei foi um matemático húngaro. Graduado na Universidade Eötvös Loránd, inicialmente trabalhou como professor escolar. Em 1940 foi indicado professor da e em 1967 mudou foi o Instituto de Matemática da Academia de Ciências da Hungria em Budapeste. Seu trabalho matemático foi focado na teoria algébrica dos números e álgebra abstrata, especialmente teoria dos grupos. Ele provou que todas os torneios tem um número ímpar de caminhos hamiltonianos. Forneceu diversas provas do teorema da reciprocidade quadrática. Provou resultados fundamentais sobre os invariantes do grupo de classes de corpos quadráticos. Em diversos casos determinou se o anel dos inteiros do campo quadrático real Q(√d) é euclidiano ou não. Generalizou com sucesso o . Foi presidente da (1947–1949). Recebeu duas vezes o Prêmio Kossuth. Foi eleito membro correspondente (1949) e membro efetivo (1955) da Academia de Ciências da Hungria. (pt)
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  • Portrait of László Rédei (en)
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  • László Rédei (en)
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  • László Rédei (Rákoskeresztúr, 15 de novembre de 1900 - Budapest, 21 de novembre de 1980) (o Ladislaus Redei, quan signava en alemany) va ser un matemàtic hongarès. (ca)
  • László RÉDEI [lAslO], hungare Rédei László estis hungara matematikisto, profesoro, membro de Hungara Scienca Akademio (ekde 1955). László Rédei naskiĝis la 15-an de novembro 1900 en Rákoskeresztúr (nuntempa Rákosmente). Li mortis la 21-an de novembro 1980 en Budapeŝto. (eo)
  • László Rédei (auch als Ladislaus Rédei zitiert; * 15. November 1900 in Rákoskeresztúr, jetzt Teil von Budapest; † 21. November 1980 in Budapest) war ein ungarischer Mathematiker, der sich mit Algebra (insbesondere Gruppentheorie und Theorie der Halbgruppen) und algebraischer Zahlentheorie beschäftigte. (de)
  • László Rédei (parfois cité comme Ladislas Rédei ; né le 15 novembre 1900 à Rákoskeresztúr, maintenant partie de Budapest ; mort le 21 novembre 1980 à Budapest) est un mathématicien hongrois spécialisé en algèbre (en particulier la théorie des groupes et la théorie des demi-groupes) et en théorie algébrique des nombres. (fr)
  • László Rédei (Rákoskeresztúr, 15 novembre 1900 – Budapest, 21 novembre 1980) è stato un matematico ungherese.Ha dato uno dei più importanti contributi alla teoria dei semigruppi commutativi finitamente generati. (it)
  • László Rédei (15 November 1900 – 21 November 1980) was a Hungarian mathematician. Rédei graduated from the University of Budapest and initially worked as a schoolteacher. In 1940 he was appointed professor in the University of Szeged and in 1967 moved to the Mathematical Institute of the Hungarian Academy of Sciences in Budapest. Rédei was the president of the János Bolyai Mathematical Society (1947–1949). He was awarded the Kossuth Prize twice. He was elected corresponding member (1949), full member (1955) of the Hungarian Academy of Sciences. (en)
  • László Rédei foi um matemático húngaro. Graduado na Universidade Eötvös Loránd, inicialmente trabalhou como professor escolar. Em 1940 foi indicado professor da e em 1967 mudou foi o Instituto de Matemática da Academia de Ciências da Hungria em Budapeste. Foi presidente da (1947–1949). Recebeu duas vezes o Prêmio Kossuth. Foi eleito membro correspondente (1949) e membro efetivo (1955) da Academia de Ciências da Hungria. (pt)
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  • László Rédei (en)
  • László Rédei (ca)
  • László Rédei (de)
  • László Rédei (eo)
  • László Rédei (fr)
  • László Rédei (it)
  • László Rédei (pt)
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  • László Rédei (en)
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