Columbia Encyclopedia

Search results

158 results found

games, theory of

(Encyclopedia)games, theory of, group of mathematical theories first developed by John Von Neumann and Oskar Morgenstern. A game consists of a set of rules governing a competitive situation in which from two to n i...

agrarian reform

(Encyclopedia)agrarian reform, redistribution of the agricultural resources of a country. Traditionally, agrarian, or land, reform is confined to the redistribution of land; in a broader sense it includes related c...

Durkheim, Émile

(Encyclopedia)Durkheim, Émile dûrkˈhīm, Fr. āmēlˈ dürkĕmˈ [key], 1858–1917, French sociologist. Along with Max Weber he is considered one of the chief founders of modern sociology. Educated in France an...

Victoria and Albert Museum

(Encyclopedia)Victoria and Albert Museum, South Kensington, London, opened in 1852 as the Museum of Manufacturers at Marlborough House. It originally contained a nucleus of contemporary objects of applied art bough...

unconscious

(Encyclopedia)unconscious, in psychology, that aspect of mental life that is separate from immediate consciousness and is not subject to recall at will. Sigmund Freud regarded the unconscious as a submerged but vas...

Reed, Ishmael Scott

(Encyclopedia) Reed, Ishmael Scott, 1938- , African-American novelist, poet, and social critic, b. Chattanooga, Tn. When he was a child, Reed’s family moved ...

Henry VI, Holy Roman emperor and German king

(Encyclopedia)Henry VI, 1165–97, Holy Roman emperor (1191–97) and German king (1190–97), son and successor of Holy Roman Emperor Frederick I (Frederick Barbarossa). He was crowned German king at Aachen in 116...

hajj

(Encyclopedia)hajj häj [key], the pilgrimage to Mecca, Saudi Arabia, one of the five basic requirements (arkan or “pillars”) of Islam. Its annual observance corresponds to the major holy day id al-adha, itself...

belligerency

(Encyclopedia)belligerency bəlĭjˈərənsē [key], in international law, status of parties legally at war. Belligerency exists in a war between nations or in a civil war if the established government treats the i...

tournament

(Encyclopedia)tournament or tourney, in the Middle Ages, public contest between armed horsemen in simulation of real battle. In this military game, which flourished from the 12th to the 16th cent., combatants were ...