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Klein, Christian Felix

(Encyclopedia)Klein, Christian Felix klīn [key], 1849–1925, German mathematician. He is noted for his work in geometry and on the theory of functions. His Erlangen program (1872) for unifying the diverse forms ...

Klein, Yves

(Encyclopedia)Klein, Yves, 1928–62, French painter. With critic Pierre Restany, he was a leader of the avant-garde movement called Nouveau Réalisme (founded 1960). In the 1950s Klein began to work in monochromes...

Minucius Felix, Marcus

(Encyclopedia)Minucius Felix, Marcus märˈkəs mĭnyo͞oshˈəs fēˈlĭks [key], fl. 2d cent., Christian apologist, author of a dialogue, Octavius, one of the earliest Latin apologies. In it a pagan and a Christi...

Klein, Melanie

(Encyclopedia)Klein, Melanie, 1882–1960, British psychoanalyst, b. Vienna. She became a psychoanalyst after seeking therapy from Sandor Ferenczi, a colleague of Sigmund Freud, who encouraged her to pursue her own...

Klein, Calvin Richard

(Encyclopedia)Klein, Calvin Richard klīn [key], 1942–, American fashion designer, b. New York City. In 1968 he established Calvin Klein Limited, which produced clothes and accessories bearing his hallmark of sim...

Felix

(Encyclopedia)Felix, Roman deacon, antipope (355–56). Emperor Constantius II, an Arian, set him up to replace Liberius. He is wrongly known as Felix II. ...

Felix V

(Encyclopedia)Felix V, antipope: see Amadeus VIII. ...

Klein, Ralph Phillip

(Encyclopedia)Klein, Ralph Phillip, 1942–2013, Canadian politician, b. Calgary. He served in the Canadian air force and worked in public relations and as a weathercaster and reporter in radio and television befor...

Klein, Lawrence Robert

(Encyclopedia)Klein, Lawrence Robert, 1920–2013, American economist, b. Omaha, Nebr., Ph.D Massachusetts Institute of Technology, 1944. He was active in academia, government, and private research institutes throu...

Dujardin, Félix

(Encyclopedia)Dujardin, Félix fālēksˈ düzhärdăNˈ [key], 1801–60, French zoologist. He did valuable research on bacteria and on the Infusoria. In 1835 he described protoplasm in unicellular animals, naming...