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Brown v. Board of Education of Topeka, Kans.

(Encyclopedia)Brown v. Board of Education of Topeka, Kans., case decided by the U.S. Supreme Court in 1954. Linda Brown was denied admission to her local elementary school in Topeka because she was black. When, com...

numeration

(Encyclopedia)numeration, in mathematics, process of designating numbers according to any particular system; the number designations are in turn called numerals. In any place value system of numeration, a base numb...

Pythagoras

(Encyclopedia)Pythagoras pĭthăgˈərəs [key], c.582–c.507 b.c., pre-Socratic Greek philosopher, founder of the Pythagorean school. He migrated from his native Samos to Crotona and established a secret religiou...

Hawking, Stephen William

(Encyclopedia)Hawking, Stephen William, 1942–2018, British theoretical physicist, b. Oxford, England, grad. University College, Oxford, 1962, Ph.D. Trinity Hall, Cambridge, 1966. In 1962 Hawking was diagnosed as ...

Alfonso III, king of Portugal

(Encyclopedia)Alfonso III, 1210–79, king of Portugal (1248–79), son of Alfonso II, brother and successor of Sancho II. By his marriage with Matilda, countess of Boulogne, he became count of Boulogne and thus wa...

reclamation of land

(Encyclopedia)reclamation of land, practice of converting land deemed unproductive into arable land by such methods as irrigation, drainage, flood control, altering the texture and mineral and organic content of so...

Sunderland, Charles Spencer, 3d earl of

(Encyclopedia)Sunderland, Charles Spencer, 3d earl of, 1674–1722, English statesman; son of the 2d earl. His marriage (1700) to a daughter of the 1st duke of Marlborough brought him a secretaryship of state (1706...

International Center for Settlement of Investment Disputes

(Encyclopedia)International Center for Settlement of Investment Disputes (ICSID), specialized agency of the United Nations. A member of the World Bank Group (see International Bank for Reconstruction and Developmen...

Zapotec

(Encyclopedia)Zapotec zäˈpətĕk, säˈ– [key], indigenous people of Mexico, primarily in S Oaxaca and on the Isthmus of Tehuantepec. Little is known of the origin of the Zapotec. Unlike most native peoples of ...

Grosseteste, Robert

(Encyclopedia)Grosseteste, Robert grōsˈtĕst [key], c.1175–1253, English prelate. Educated at Oxford and probably also at Paris, he became one of the most learned men of his time. He taught at Oxford and later,...