Gabriel Sudan: Difference between revisions
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==References== |
==References== |
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*{{cite journal|first=Gabriel|last= Sudan|jstor=43769875 |title=Sur le nombre transfini ω<sup>ω</sup>|journal= Bulletin Mathématique de la Société Roumaine des Sciences |volume=30|pages= 11–30 |year=1927|jfm=53.0171.01}} |
*{{cite journal|first=Gabriel|last= Sudan|jstor=43769875 |title=Sur le nombre transfini ω<sup>ω</sup>|journal= Bulletin Mathématique de la Société Roumaine des Sciences |volume=30|pages= 11–30 |year=1927|jfm=53.0171.01}} |
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*{{cite journal|first=Wilhelm|last= Ackermann|authorlink=Wilhelm Ackermann |title=Zum Hilbertschen Aufbau der reellen Zahlen| journal=[[Mathematische Annalen]]|volume= 99|pages= 118–133 |year=1928| jfm=54.0056.06}} |
*{{cite journal|first=Wilhelm|last= Ackermann|authorlink=Wilhelm Ackermann |title=Zum Hilbertschen Aufbau der reellen Zahlen| journal=[[Mathematische Annalen]]|volume= 99|pages= 118–133 |year=1928|doi= 10.1007/BF01459088| jfm=54.0056.06|s2cid= 123431274}} |
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*[[Cristian S. Calude|Cristian Calude]], [[Solomon Marcus]], Ionel Tevy, ''The first example of a recursive function which is not primitive recursive'', Historia Mathematica 6 (1979), no. 4, 380–384 {{doi|10.1016/0315-0860(79)90024-7}} |
*[[Cristian S. Calude|Cristian Calude]], [[Solomon Marcus]], Ionel Tevy, ''The first example of a recursive function which is not primitive recursive'', Historia Mathematica 6 (1979), no. 4, 380–384 {{doi|10.1016/0315-0860(79)90024-7}} |
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*Solomon Marcus, [https://web.archive.org/web/20070928044405/http://www.journal.univagora.ro/download/pdf/27.pdf "Grigore C. Moisil: A life becoming a myth"], International Journal of Computers, Communications & Control, vol. 1 (2006), no. 1, 73–79. |
*Solomon Marcus, [https://web.archive.org/web/20070928044405/http://www.journal.univagora.ro/download/pdf/27.pdf "Grigore C. Moisil: A life becoming a myth"], International Journal of Computers, Communications & Control, vol. 1 (2006), no. 1, 73–79. |
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Revision as of 07:25, 14 December 2020
Gabriel Sudan (April 14, 1899 – June 22, 1977) was a Romanian mathematician, known for the Sudan function (1927), an important example in the theory of computation, similar to the Ackermann function (1928).
Born in Bucharest, Sudan received his Ph.D. from the University of Göttingen in 1925 for his thesis Über die geordneten Mengen ("On the theory of ordered sets"), supervised by David Hilbert.[1] He taught at the Polytechnic University of Bucharest from 1941 until his retirement, in 1966.
Sudan constructed the function that bears his name with the same aim as Wilhelm Ackermann: to solve in the affirmative a problem raised by Hilbert. The Ackermann and Sudan functions are chronologically the first examples of recursive functions which are not primitive recursive.
References
- Sudan, Gabriel (1927). "Sur le nombre transfini ωω". Bulletin Mathématique de la Société Roumaine des Sciences. 30: 11–30. JFM 53.0171.01. JSTOR 43769875.
- Ackermann, Wilhelm (1928). "Zum Hilbertschen Aufbau der reellen Zahlen". Mathematische Annalen. 99: 118–133. doi:10.1007/BF01459088. JFM 54.0056.06. S2CID 123431274.
- Cristian Calude, Solomon Marcus, Ionel Tevy, The first example of a recursive function which is not primitive recursive, Historia Mathematica 6 (1979), no. 4, 380–384 doi:10.1016/0315-0860(79)90024-7
- Solomon Marcus, "Grigore C. Moisil: A life becoming a myth", International Journal of Computers, Communications & Control, vol. 1 (2006), no. 1, 73–79.
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