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Øystein Ore (7 October 1899 in Oslo, Norway – 13 August 1968 in Oslo) was a Norwegian mathematician.

Yale University’s James Pierpont went to Europe in 1926 seeking to recruit European research mathematicians. In 1927 Ore was appointed Assistant Professor of Mathematics at Yale, becoming Associate Professor in 1928, and full Professor in 1929. In 1931 he became Sterling Professor at Yale, a position he held until his retirement in 1968.

Ore was an AMS Colloquium Lecturer in 1941 and plenary speaker at the International Congress in 1936 in Oslo. He was also elected to the American Academy of Arts and Sciences and the Oslo Academy of Science. He was also among the founders of the Econometric Society.

Ore visited Norway nearly every summer. During World War II, he was active in the movements "American Relief for Norway" and "Free Norway". In gratitude for the services rendered to his native country during the War, he was decorated in 1947 with the Knight Order of St. Olav.

In 1930, Ore married Gudrun Lundevall; they had two children. He had a passion for painting and sculpture, collected ancient maps, and spoke several languages.

In 1930 the Collected Works of Richard Dedekind were published in three volumes, jointly edited by Ore and Emmy Noether. He then turned his attention to lattice theory becoming, together with Garrett Birkhoff, one of the two founders of American expertise in the subject. Ore's early work on lattice theory led him to the study of equivalence and closure relations, Galois connections, and finally to graph theory, which occupied him to the end of his life.

Ore had a lively interest in the history of mathematics, and was an unusually able author of books for laypeople, such as his biographies of Cardano and Niels Henrik Abel.

- Les Corps Algébriques et la Théorie des Idéaux (1934)
- L'Algèbre Abstraite (1936)
- Number Theory and its History (1948)
- Cardano, the Gambling Scholar (Princeton University Press, 1953)
- Niels Henrik Abel, Mathematician Extraordinary (U. of Minnesota Press, 1957)
- Theory of Graphs (1962)
- Graphs and Their Uses (1963)
- The Four-Color Problem (1967)
- Invitation to Number Theory (1969)

- . The source for much of this entry.

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Last updated on Tuesday July 15, 2008 at 18:27:11 PDT (GMT -0700)

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This article is licensed under the GNU Free Documentation License.

Last updated on Tuesday July 15, 2008 at 18:27:11 PDT (GMT -0700)

View this article at Wikipedia.org - Edit this article at Wikipedia.org - Donate to the Wikimedia Foundation

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