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Boolean algebra

(Encyclopedia)Boolean algebra bo͞oˈlēən [key], an abstract mathematical system primarily used in computer science and in expressing the relationships between sets (groups of objects or concepts). The notational...

Lewis, Sir George Cornewall

(Encyclopedia)Lewis, Sir George Cornewall, 1806–63, English statesman and man of letters. Entering Parliament as a Liberal in 1847, he served as chancellor of exchequer (1855–58), home secretary (1859–61), an...

Lewis and Clark expedition

(Encyclopedia)Lewis and Clark expedition, 1803–6, U.S. expedition that explored the territory of the Louisiana Purchase and the country beyond as far as the Pacific Ocean. The men were gathered and in the winte...

Namier, Sir Lewis Bernstein

(Encyclopedia)Namier, Sir Lewis Bernstein nāmˈyər [key], 1888–1960, English historian, b. Poland. He attended the London School of Economics and Oxford and became professor at the Univ. of Manchester in 1931, ...

Powell, Lewis Franklin, Jr.

(Encyclopedia)Powell, Lewis Franklin, Jr., 1907–98, American lawyer, associate justice of the U.S. Supreme Court (1971–87), b. Suffolk, Va. He studied law at Washington and Lee Univ. and was admitted to the Vir...

University Heights

(Encyclopedia)University Heights, city (1990 pop. 14,790), Cuyahoga co., NE Ohio, a residential suburb E of Cleveland; inc. 1925. It is the seat of John Carroll Univ. ...

Jeffries, James J.

(Encyclopedia)Jeffries, James J., 1875–1953, American boxer, b. Carroll, Fairfield co., Ohio. He began boxing in 1896, and in 1899 he won the heavyweight championship from Robert Fitzsimmons at Coney Island in Ne...

Fox, Paula

(Encyclopedia)Fox, Paula, 1923–, American writer, b. New York City. Fox's six cooly acute novels reflect her own life, particularly her miserable childhood and its psychological aftermath. Poor George (1967), her...

Helena

(Encyclopedia)Helena. 1 City (2020 pop. 20,633), Jefferson and Shelby cos., central Ala.; inc. 1877. White settlers began to occupy the area after the War of ...

Carrollton

(Encyclopedia)Carrollton. 1 City (2020 pop. 26,738), seat of Carroll co., W Ga., on the Little Tallapoosa River; inc. 1897. Manufacturing includes fiber-optic ...