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games, theory of

(Encyclopedia) games, theory of, group of mathematical theories first developed by John Von Neumann and Oskar Morgenstern. A game consists of a set of rules governing a competitive situation in which…

XYZ Affair

(Encyclopedia) XYZ Affair, name usually given to an incident (1797–98) in Franco-American diplomatic relations. The United States had in 1778 entered into an alliance with France, but after the…

non-Euclidean geometry

(Encyclopedia) non-Euclidean geometry, branch of geometry in which the fifth postulate of Euclidean geometry, which allows one and only one line parallel to a given line through a given external…

Suffolk sheep

(Encyclopedia) Suffolk sheep, relatively large breed, developed in England, well-known for its high quality meat. Considered to be a recent introduction to the United States, the breed has many…

Sánchez Ferlosio, Rafael

(Encyclopedia) Sánchez Ferlosio, RafaelSánchez Ferlosio, Rafaelräfäĕlˈ sänˈchĕth fārlōˈsyō [key], 1927–, Spanish novelist, b. Rome. He has published two novels. Industrias y andanzas de Alfanhuí [the…

kleptomania

(Encyclopedia) kleptomaniakleptomaniaklĕpˌtəmāˈnēə [key] [Gr.,=craze for stealing], irresistible compulsion to steal, motivated by neurotic impulse rather than material need. No specific cause is…

Leichhardt, Friedrich Wilhelm Ludwig

(Encyclopedia) Leichhardt, Friedrich Wilhelm LudwigLeichhardt, Friedrich Wilhelm Ludwigfrēˈdrĭkh vĭlˈhĕlm l&oomacr;dˈvĭkh līkhˈhärt [key], 1813–1848?, Prussian explorer of Australia. He led (1844…

Lambeth Conference

(Encyclopedia) Lambeth Conference, convocation at Lambeth Palace, London, that brings together all the bishops in the Anglican Communion. It meets about every 10 years at the invitation of the…

Evans, Frederick H.

(Encyclopedia) Evans, Frederick H., 1853–1943, English photographer. Evans retired from bookselling in 1898 when he began his photographic career. He became internationally famous for his exquisite…

Greb, Harry

(Encyclopedia) Greb, Harry, 1894–1926, American boxer, b. Pittsburgh. Although blind in one eye, Greb was one of the most feared fighters in American ring history. He was a natural middleweight, but…