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Tibor Radó

Tibor Radó (June 2, 1895 – December 29, 1965) was a Hungarian mathematician who moved to the United States after World War I.

Tibor Radó
Left to right, standing: Frigyes Riesz, Béla Kerékjártó, Alfréd Haar, Dénes Kőnig, Rudolf Ortvay [hu], on chairs: József Kürschák, George David Birkhoff, O.D. Kellog, Lipót Fejér, sitting on the floor: Tibor Radó, István Lipka [hu], László Kalmár, Pál Szász [hu]
Born(1895-06-02)June 2, 1895
DiedDecember 29, 1965(1965-12-29) (aged 70)
NationalityHungarian
Alma materFranz Joseph University
Known forRadó's theorem (Riemann surfaces)
Radó's theorem (harmonic functions)
Radó–Kneser–Choquet theorem
Covering problem of Rado
Busy beaver problem
Scientific career
FieldsMathematics

Biography

Radó was born in Budapest and between 1913 and 1915 attended the Polytechnic Institute, studying civil engineering. In World War I, he became a First Lieutenant in the Hungarian Army and was captured on the Russian Front. He escaped from a Siberian prisoner camp and, traveling thousands of miles across Arctic wasteland, managed to return to Hungary.

He received a doctorate from the Franz Joseph University in 1923. He taught briefly at the university and then became a research fellow in Germany for the Rockefeller Foundation. In 1929, he moved to the United States and lectured at Harvard University and the Rice Institute before obtaining a faculty position in the Department of Mathematics at Ohio State University in 1930. In 1935 he was granted American citizenship. In World War II he was a science consultant to the United States government, interrupting his academic career. He became Chairman of the Department of Mathematics at Ohio State University in 1948.

In the 1920s, he proved that surfaces have an essentially unique triangulation. In 1933, Radó published "On the Problem of Plateau" in which he gave a solution to Plateau's problem, and in 1935, "Subharmonic Functions". His work focused on computer science in the last decade of his life and in May 1962 he published one of his most famous results in the Bell System Technical Journal: the busy beaver function and its non-computability ("On Non-Computable Functions").

He died in New Smyrna Beach, Florida.

Works

  • Über den Begriff der Riemannschen Fläche, Acta Scientarum Mathematicarum Universitatis Szegediensis, 1925
  • The problem of least area and the problem of Plateau, Mathematische Zeitschrift Vol. 32, 1930, p.763
  • On the problem of Plateau, Springer-Verlag, Berlin, Ergebnisse der Mathematik und ihrer Grenzgebiete, 1933,[1] 1951, 1971
  • Subharmonic Functions, Springer, Ergebnisse der Mathematik und ihrer Grenzgebiete, 1937[2]
  • Length and Area, AMS Colloquium Lectures, 1948[3]
  • with Paul V. Reichelderfer Continuous transformations in analysis - with an introduction to algebraic topology, Springer 1955
  • On Non-Computable Functions, Bell System Technical Journal 41/1962 scan
  • Computer studies of Turing machine problems, Journal of the ACM 12/1965

See also

References

  1. ^ Douglas, Jesse (1934). "Review: On the Problem of Plateau, by Tibor Radó" (PDF). Bull. Amer. Math. Soc. 40 (3): 194–196. doi:10.1090/s0002-9904-1934-05806-3.
  2. ^ Tamarkin, J. D. (1937). "Review: T. Radó, Subharmonic Functions". Bull. Amer. Math. Soc. 43 (11): 758–759. doi:10.1090/s0002-9904-1937-06617-1.
  3. ^ McShane, E. J. (1948). "Review: Tibor Radó, Length and area". Bull. Amer. Math. Soc. 54 (9): 861–863. doi:10.1090/s0002-9904-1948-09070-x.

External links

tibor, radó, june, 1895, december, 1965, hungarian, mathematician, moved, united, states, after, world, left, right, standing, frigyes, riesz, béla, kerékjártó, alfréd, haar, dénes, kőnig, rudolf, ortvay, chairs, józsef, kürschák, george, david, birkhoff, kell. Tibor Rado June 2 1895 December 29 1965 was a Hungarian mathematician who moved to the United States after World War I Tibor RadoLeft to right standing Frigyes Riesz Bela Kerekjarto Alfred Haar Denes Konig Rudolf Ortvay hu on chairs Jozsef Kurschak George David Birkhoff O D Kellog Lipot Fejer sitting on the floor Tibor Rado Istvan Lipka hu Laszlo Kalmar Pal Szasz hu Born 1895 06 02 June 2 1895Budapest Austria HungaryDiedDecember 29 1965 1965 12 29 aged 70 New Smyrna Beach FloridaNationalityHungarianAlma materFranz Joseph UniversityKnown forRado s theorem Riemann surfaces Rado s theorem harmonic functions Rado Kneser Choquet theoremCovering problem of RadoBusy beaver problemScientific careerFieldsMathematics Contents 1 Biography 2 Works 3 See also 4 References 5 External linksBiography EditRado was born in Budapest and between 1913 and 1915 attended the Polytechnic Institute studying civil engineering In World War I he became a First Lieutenant in the Hungarian Army and was captured on the Russian Front He escaped from a Siberian prisoner camp and traveling thousands of miles across Arctic wasteland managed to return to Hungary He received a doctorate from the Franz Joseph University in 1923 He taught briefly at the university and then became a research fellow in Germany for the Rockefeller Foundation In 1929 he moved to the United States and lectured at Harvard University and the Rice Institute before obtaining a faculty position in the Department of Mathematics at Ohio State University in 1930 In 1935 he was granted American citizenship In World War II he was a science consultant to the United States government interrupting his academic career He became Chairman of the Department of Mathematics at Ohio State University in 1948 In the 1920s he proved that surfaces have an essentially unique triangulation In 1933 Rado published On the Problem of Plateau in which he gave a solution to Plateau s problem and in 1935 Subharmonic Functions His work focused on computer science in the last decade of his life and in May 1962 he published one of his most famous results in the Bell System Technical Journal the busy beaver function and its non computability On Non Computable Functions He died in New Smyrna Beach Florida Works EditUber den Begriff der Riemannschen Flache Acta Scientarum Mathematicarum Universitatis Szegediensis 1925 The problem of least area and the problem of Plateau Mathematische Zeitschrift Vol 32 1930 p 763 On the problem of Plateau Springer Verlag Berlin Ergebnisse der Mathematik und ihrer Grenzgebiete 1933 1 1951 1971 Subharmonic Functions Springer Ergebnisse der Mathematik und ihrer Grenzgebiete 1937 2 Length and Area AMS Colloquium Lectures 1948 3 with Paul V Reichelderfer Continuous transformations in analysis with an introduction to algebraic topology Springer 1955 On Non Computable Functions Bell System Technical Journal 41 1962 scan Computer studies of Turing machine problems Journal of the ACM 12 1965See also EditRado s theorem Riemann surfaces Rado s theorem harmonic functions References Edit Douglas Jesse 1934 Review On the Problem of Plateau by Tibor Rado PDF Bull Amer Math Soc 40 3 194 196 doi 10 1090 s0002 9904 1934 05806 3 Tamarkin J D 1937 Review T Rado Subharmonic Functions Bull Amer Math Soc 43 11 758 759 doi 10 1090 s0002 9904 1937 06617 1 McShane E J 1948 Review Tibor Rado Length and area Bull Amer Math Soc 54 9 861 863 doi 10 1090 s0002 9904 1948 09070 x External links EditTibor Rado at the Mathematics Genealogy Project O Connor John J Robertson Edmund F Tibor Rado MacTutor History of Mathematics archive University of St Andrews Biography from the Ohio State University and other links Retrieved from https en wikipedia org w index php title Tibor Rado amp oldid 1130409995, wikipedia, wiki, book, books, library,

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