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Yeltsin, Boris Nikolayevich

(Encyclopedia)Yeltsin, Boris Nikolayevich bərēsˈ nyĭkəlīˈəvĭch yĕltˈsĭn [key], 1931–2007, Soviet and Russian politician, president of Russia (1991–99). Born in Yekaterinburg (then Sverdlovsk) and ed...

Shelley, Percy Bysshe

(Encyclopedia)Shelley, Percy Bysshe bĭsh [key], 1792–1822, English poet, b. Horsham, Sussex. He is ranked as one of the great English poets of the romantic period. Most of Shelley's poetry reveals his philos...

continent

(Encyclopedia)continent, largest unit of landmasses on the earth. The continents include Eurasia (conventionally regarded as two continents, Europe and Asia), Africa, North America, South America, Australia, and An...

differential geometry

(Encyclopedia)differential geometry, branch of geometry in which the concepts of the calculus are applied to curves, surfaces, and other geometric entities. The approach in classical differential geometry involves ...

Newark, cities, United States

(Encyclopedia)Newark. 1 City (1990 pop. 37,861), Alameda co., W Calif., on the east side of San Francisco Bay; inc. 1955. There is food processing and the manufacture of plastics, furniture, feeds, semiconductors, ...

New Deal

(Encyclopedia)New Deal, in U.S. history, term for the domestic reform program of the administration of Franklin Delano Roosevelt; it was first used by Roosevelt in his speech accepting the Democratic party nominati...

sociology

(Encyclopedia)sociology, scientific study of human social behavior. As the study of humans in their collective aspect, sociology is concerned with all group activities—economic, social, political, and religious. ...

Wittgenstein, Ludwig Josef Johann

(Encyclopedia)Wittgenstein, Ludwig Josef Johann loŏtˈvĭkh yōˈzĕf yōˈhän vĭtˈgənshtīn [key], 1889–1951, Austrian philosopher, b. Vienna. The second phase of Wittgenstein's philosophy commenced with ...

St. John, Henry, Viscount Bolingbroke

(Encyclopedia)St. John, Henry, Viscount Bolingbroke sĭn jŭn, bŏlˈĭngbro͝ok [key], 1678–1751, English statesman. He retired from politics in 1735 and spent most his remaining years on his estates in France...

number

(Encyclopedia)number, entity describing the magnitude or position of a mathematical object or extensions of these concepts. A real or complex number z is called algebraic if it is the root of a polynomial equati...