Øystein Ore (7 October 1899 – 13 August 1968) was a Norwegian mathematician known for his work in ring theory, Galois connections, graph theory, and the...

Look up Øystein in Wiktionary, the free dictionary. Øystein is a Norwegian given name of Old Norse origins. One of its variants is Östen which is mostly...

differential and/or recurrence operators. The concept is named after Øystein Ore. Let K {\displaystyle K} be a (commutative) field and A = K [ x 1 , …...

Ore's theorem is a result in graph theory proved in 1960 by Norwegian mathematician Øystein Ore. It gives a sufficient condition for a graph to be Hamiltonian...

reform Henrik Øre (born 1979), former Danish cricketer Øystein Ore, Norwegian mathematician Rebecca Ore, American science fiction writer Ore Oduba, (born...

in the area of algebra known as ring theory, the Ore condition is a condition introduced by Øystein Ore, in connection with the question of extending beyond...

(sequence A001599 in the OEIS). Harmonic divisor numbers were introduced by Øystein Ore, who showed that every perfect number is a harmonic divisor number and...

Zippel's result. The finite field version of this bound was proved by Øystein Ore in 1922. Theorem 1 (Schwartz, Zippel). Let P ∈ R [ x 1 , x 2 , … , x...

and only occasionally on mathematical logic. Skolem's Ph.D. student Øystein Ore went on to a career in the USA. Skolem served as president of the Norwegian...

Brandt groupoid. The term was then appropriated by B. A. Hausmann and Øystein Ore (1937) in the sense (of a set with a binary operation) used in this article...

an Ore extension, named after Øystein Ore, is a special type of a ring extension whose properties are relatively well understood. Elements of a Ore extension...

American mathematician Robert Carmichael by Nicolaas Beeger, in 1950. Øystein Ore had referred to them in 1948 as numbers with the "Fermat property", or...

Theory of Numbers (5th ed.). John Wiley & Sons. ISBN 0-471-62546-9. Øystein Ore, Number Theory and its History, McGraw–Hill, NY, 1944 (and Dover reprints)...

Guldberg (1838–1913) Alf Victor Guldberg (1866–1936) Sophus Lie (1842–1899) Øystein Ore (1899–1968) Thoralf Skolem (1887–1963) Carl Størmer (1874–1957) Ludwig...

MATHEMATICAL PAPYRUS". A history of the world. BBC. Retrieved 26 February 2012. Øystein Ore, "Number Theory and its History", McGraw–Hill Book Co, 1944...

Hopper earned a Ph.D. in mathematics from Yale under the direction of Øystein Ore. Her dissertation, "New Types of Irreducibility Criteria", was published...

between u and v F. Harary, Graph Theory, Addison-Wesley, 1969, p.199. Øystein Ore, Theory of graphs [3rd ed., 1967], Colloquium Publications, American...

original group, an idea that goes back to the work of Øystein Ore (1937, 1938). For instance, as Ore proved, a group is locally cyclic if and only if its...

returned to Yale to take his Ph.D. in 1936 under the supervision of Øystein Ore. He worked in Naval Intelligence during World War II, including six months...

which generalizes earlier results by G. A. Dirac (1952) and Øystein Ore. Both Dirac's and Ore's theorems can also be derived from Pósa's theorem (1962)....

(for function notation) 1936 (to denote images of specific elements) Øystein Ore 1940 (in the present form of f: X → Y) Witold Hurewicz ∅ empty set sign...

elements that are products of commutators but not themselves commutators. Øystein Ore proved in 1951 that the alternating groups on five or more elements contained...

Thoralf Skolem made revolutionary contributions to mathematical logic. Øystein Ore and Ludwig Sylow made important contributions in group theory. Atle Selberg...

J. Harvey Rogers, Malcolm C. Rorty, Carl Snyder, Walter A. Shewhart, Øystein Ore, Ingvar Wedervang and Norbert Wiener. The Econometric Society sponsors...

subject was minimal until the early 1930s, when Garrett Birkhoff and Øystein Ore began publishing on universal algebras. Developments in metamathematics...

in graphs, such as Hall's marriage theorem. This was first studied by Øystein Ore.: 17  A related property is surplus. Let G = (V, E) be a graph, and let...

scheme is defined in terms of Azumaya algebras. The Ore condition is a condition introduced by Øystein Ore, in connection with the question of extending beyond...

Beams, Ernest William Brown, Ernest Lawrence, F. S. C. Northrop, and Øystein Ore, among others. He graduated from Yale with a B.A. in 1930. During this...

Molina Frank Morley Francis Dominic Murnaghan Forrest Hamilton Murray Øystein Ore Charles Algernon Parsons John Patterson Giuseppe Peano Mihailo Petrovitch...

Here: p.413 bottom Richard Dedekind (1932), Robert Fricke; Emmy Noether; Øystein Ore (eds.), Gesammelte mathematische Werke, vol. 3, Braunschweig: Friedr...