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Boolean algebra
(Encyclopedia) Boolean algebraBoolean algebrab&oomacr;ˈlēən [key], an abstract mathematical system primarily used in computer science and in expressing the relationships between sets (groups of…Biddle, Nicholas, American financier
(Encyclopedia) Biddle, Nicholas, 1786–1844, American financier, b. Philadelphia. After holding important posts in the American legations in France and England, he returned to the United States in…Pippin, Horace
(Encyclopedia) Pippin, Horace, 1888–1946, American primitive painter, b. West Chester, Pa. He worked as a porter, peddler, and warehouseman and never studied art. He was severely wounded in World War…Bawendi, Moungi
(Encyclopedia) Moungi Bawendi, 1961–, b. Paris, France, American-Tunisian-French chemist, studied at Harvard University (B.A., 1982; M.A.1983) and the…Soulouque, Faustin Élie
(Encyclopedia) Soulouque, Faustin ÉlieSoulouque, Faustin ÉliefōstăNˈ ālēˈ s&oomacr;l&oomacr;kˈ [key], c.1785–1867, emperor of Haiti (1849–59). An illiterate former slave, he became president…Stella, Joseph
(Encyclopedia) Stella, Joseph, 1877–1946, American painter, b. Italy, emigrated to the United States in 1896. He studied at the Art Students League of New York City with William Chase and later in…Serapis
(Encyclopedia) SerapisSerapissĕrāˈpĭs [key] or SarapisSerapissäräˈpĭs [key], Egyptian god whose devotees united the worship of the Apis bull and the god Osiris. His cult, which originated at Memphis…San Luis Potosí, city, Mexico
(Encyclopedia) San Luis Potosí, city (1990 pop. 489,238), capital of San Luis Potosí state, central Mexico. Situated on a plain almost entirely surrounded by low mountains, the city is a mining and…Tedder, Arthur William Tedder, 1st Baron
(Encyclopedia) Tedder, Arthur William Tedder, 1st Baron, 1890–1967, British air marshal. He saw service in the infantry and the Royal Flying Corps in World War I. After 1919 he held important…Leonidas
(Encyclopedia) LeonidasLeonidaslēŏnˈĭdəs [key], d. 480 b.c., king of Sparta. He succeeded (c.491 b.c.) his half-brother, Cleomenes I. When the Persians invaded Greece under Xerxes (480 b.c.),…