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...

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...

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...

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

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...

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...

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...

(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...