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Robertson, William

(Encyclopedia)Robertson, William, 1721–93, Scottish churchman and historian. As moderator (1762–80) of the general assembly of the Church of Scotland, he led the moderate party and enforced the right of the sta...

Robinson, James Harvey

(Encyclopedia)Robinson, James Harvey, 1863–1936, American historian, b. Bloomington, Ill. He taught history at the Univ. of Pennsylvania (1891–95) and Columbia (1895–1919), becoming a full professor in 1895. ...

Virchow, Rudolf

(Encyclopedia)Virchow, Rudolf ro͞oˈdôlf fĭrˈkhō [key], 1821–1902, German pathologist, a founder of cellular pathology. He became professor at the Univ. of Würzburg (1849) and professor and director of the ...

Ferguson, Adam

(Encyclopedia)Ferguson, Adam fûrˈgəsən [key], 1723–1816, Scottish philosopher and historian. He was professor of philosophy at the Univ. of Edinburgh (1759–85). His Essay on the History of Civil Society (17...

Engelmann, George

(Encyclopedia)Engelmann, George ĕngˈəlmən [key], 1809–84, American physician and botanist, b. Frankfurt-am-Main, Germany, educated at the universities of Heidelberg and Würzburg (M.D., 1831). Emigrating to A...

Tyndall, John

(Encyclopedia)Tyndall, John tĭnˈdəl [key], 1820–93, British physicist, b. Ireland. He became (1853) professor of natural philosophy at the Royal Institution and in 1867 succeeded Michael Faraday, his friend an...

Bell, Daniel

(Encyclopedia)Bell, Daniel, 1919–2011, American sociologist, b. New York City as Daniel Bolotsky, grad. City College (1939), Columbia (Ph.D., 1960). His immigrant parents changed their surname when he was 13. Bel...

Bailly, Jean Sylvain

(Encyclopedia)Bailly, Jean Sylvain zhäN sēlvăNˈ bäyēˈ [key], 1736–93, French astronomer and politician. His works on astronomy and on the history of science (notably the Essai sur la théorie des satellite...

Prada, Miuccia

(Encyclopedia)Prada, Miuccia, 1949–, Italian fashion designer, b. Milan as Maria Bianchi. She studied political science (Ph.D. Univ. of Milan, 1973) and then studied and performed mime at Milan's Teatro Piccolo. ...

proof, in mathematics

(Encyclopedia)proof, in mathematics, finite sequence of propositions each of which is either an axiom or follows from preceding propositions by one of the rules of logical inference (see symbolic logic). Mathematic...