orig. Christine Ladd born Dec. 1, 1847, Windsor, Conn., U.S. died March 5, 1930, New York, N.Y. U.S. scientist and logician. She fulfilled Ph.D. requirements at Johns Hopkins University in the 1880s, but, because women candidates were not recognized, she was not awarded her degree until 1926. In symbolic logic, she reduced syllogistic reasoning to an inconsistent triad with the introduction of the antilogism, a form that made the testing of deductions easier. The Ladd-Franklin theory of colour vision stressed increasing colour differentiation with evolution and assumed a photochemical model for the visual system. Her principal works are The Algebra of Logic (1883), The Nature of Color Sensation (1925), and Color and Color Theories (1929)
formerly Chris Evert Lloyd born Dec. 21, 1954, Fort Lauderdale, Fla., U.S. U.S. tennis player. She became in 1971 the youngest player to reach the semifinals of the U.S. championship. She won the U.S. Open women's singles six times (1975-78, 1980, 1982) and repeatedly won the Wimbledon singles (1974, 1976, 1981), the French Open singles (1974, 1975, 1979, 1980, 1983, 1985, 1986), and the Australian Open singles (1982, 1984), for a total of 18 grand-slam titles. She retired in 1989
or Christine de Pizan born 1364, Venice died 1430 French writer. She was the daughter of an astrologer to Charles V and the wife of a court secretary and took up writing to support her children when she was widowed, producing 10 volumes of graceful verse, including ballads, rondeaux, lays, and complaints, many in the courtly-love tradition. Some works, both poetry and prose, champion women, notably The Book of the City of Ladies (1405). She also wrote a life of Charles V and Le Ditié de Jehanne d'Arc (1429), inspired by Joan of Arc's early victories
christine
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Chris·tine
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krîstin
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/krəˈstēn/ /krɪˈstiːn/
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() From French Christine, a cognate of English Christina.