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proof, in mathematics

(Encyclopedia)proof, in mathematics, finite sequence of propositions each of which is either an axiom or follows from preceding propositions by one of the rules of logical inference (see symbolic logic). Mathematic...

Halévy, Élie

(Encyclopedia)Halévy, Élie ālēˈ älāvēˈ [key], 1870–1937, French historian, an authority on 19th-century England; son of Ludovic Halévy. In The Growth of Philosophic Radicalism (3 vol., 1901–4; tr., ne...

Mayo, Henry Thomas

(Encyclopedia)Mayo, Henry Thomas, 1856–1937, American naval officer, b. Burlington, Vt. In 1913 he became commander of the Atlantic Fleet. At Tampico in 1914 he precipitated an international incident by demanding...

Kendrick, John

(Encyclopedia)Kendrick, John, c.1740–1794, American sea captain, b. Massachusetts. During part of the American Revolution he commanded privateers. As commander of an expedition composed of the Columbia and Washin...

Cohan, George Michael

(Encyclopedia)Cohan, George Michael kōhănˈ, kōˈhăn, kōˈən [key], 1878–1942, American showman, b. Providence, R.I. As a child he appeared in vaudeville as one of “The Four Cohans” with his father, mot...

Chambord, Henri Charles Ferdinand Marie Dieudonné, comte de

(Encyclopedia)Chambord, Henri Charles Ferdinand Marie Dieudonné, comte de äNrēˈ shärl fĕrdēnäNˈ märēˈ dyödônāˈ kôNt də shäNbôrˈ [key], 1820–83, Bourbon claimant to the French throne, posthumo...

Paris, Declaration of

(Encyclopedia)Paris, Declaration of, 1856, agreement concerning the rules of maritime warfare, issued at the Congress of Paris. It was the first major attempt to codify the international law of the sea. Conflicting...

Shannon, Claude Elwood

(Encyclopedia)Shannon, Claude Elwood, 1916–2001, American applied mathematician, b. Gaylord, Michigan. A student of Vannevar Bush at the Massachusetts Institute of Technology (MIT), he was the first to propose th...

musicology

(Encyclopedia)musicology, systematized study of music and musical style, particularly in the realm of historical research. The scholarly study of music of different historical periods was not practiced until the 18...

propaganda

(Encyclopedia)propaganda, systematic manipulation of public opinion, generally by the use of symbols such as flags, monuments, oratory, and publications. Modern propaganda is distinguished from other forms of commu...