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Cheyenne, river, United States

(Encyclopedia)Cheyenne, river, 527 mi (848 km) long, rising in E Wyo. and flowing NE to the Missouri River near Pierre, S.Dak. The Cheyenne basin is part of the Missouri River basin project. The U.S. Bureau of Recl...

Boyer, Jean Pierre

(Encyclopedia)Boyer, Jean Pierre zhäN pyĕr bwäyāˈ [key], 1776–1850, president of Haiti (1818–43). A free mulatto, he fought under Toussaint Louverture and then joined André Rigaud, also a mulatto, in the ...

Groseilliers, Médard Chouart, sieur des

(Encyclopedia)Groseilliers, Médard Chouart, sieur des mādärˈ shwär syör dā grôsāyāˈ [key], 1618?–c.1690, French trader and explorer in North America. He was the brother-in-law of Pierre Esprit Radisson...

atomism

(Encyclopedia)atomism, philosophic concept of the nature of the universe, holding that the universe is composed of invisible, indestructible material particles. The theory was first advanced in the 5th cent. b.c. b...

Corneille, Pierre

(Encyclopedia)Corneille, Pierre pyĕr kôrnāˈyə [key], 1606–84, French dramatist, ranking with Racine as a master of French classical tragedy. Educated by Jesuits, he practiced law briefly in his native Rouen ...

Ailly, Pierre d'

(Encyclopedia)Ailly, Pierre d' pyĕr dāyēˈ [key], 1350–1420, French theologian and writer, cardinal of the Roman Catholic Church. He was the teacher of John Gerson and was Gerson's predecessor as chancellor of...

number theory

(Encyclopedia)number theory, branch of mathematics concerned with the properties of the integers (the numbers 0, 1, −1, 2, −2, 3, −3, …). An important area in number theory is the analysis of prime number...

Brazzaville

(Encyclopedia)Brazzaville brăzˈəvĭl, Fr. bräzävēlˈ [key], city (1984 pop. 585,812), capital of the Republic of the Congo, on Pool Malebo of the Congo River. It is the nation's largest city and its administr...

Soulages, Pierre

(Encyclopedia)Soulages, Pierre, 1919–, French abstract painter. Largely self-taught, he has been influenced by the carved prehistoric standing stones, Romanesque sculptures, and other art found where he was raise...

Buyoya, Pierre

(Encyclopedia)Buyoya, Pierre, 1949–2020, Burundian political leader. An ethnic Tutsi, he had a successful military career before he overthrew President Jean-Baptiste Bagaza and became president of a Tutsi-led mil...
 

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