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Kronecker, Leopold

(Encyclopedia)Kronecker, Leopold lāˈōpôlt krōˈnĕkˌər [key], 1823–91, German mathematician. After making a fortune in business he devoted his attention to mathematics and became professor at the Univ. of ...

Gunter, Edmund

(Encyclopedia)Gunter, Edmund, 1581–1626, English mathematician and astronomer, educated at Westminster School, London, and Christ Church, Oxford. He invented (1618) a small portable quadrant and discovered (1622)...

Habash al-Hasib

(Encyclopedia)Habash al-Hasib häbäshˈ äl-häsēbˈ [key], d. c.870, Arab mathematician and astronomer. Habash al-Hasib was born in what is now Mary, Turkmenistan, and worked in Baghdad. He calculated tables of ...

Grimaldi, Francesco Maria

(Encyclopedia)Grimaldi, Francesco Maria fränchāsˈkō märēˈä grēmälˈdē [key], 1618?–1663, Italian physicist and mathematician. A Jesuit and professor at Bologna, he studied in detail and named the dark ...

Al-Khowarizmi

(Encyclopedia)Al-Khowarizmi äl-khōwärēzˈmē [key], fl. 820, Arab mathematician of the court of Mamun in Baghdad. His treatises on Hindu arithmetic and on algebra made him famous. He is said to have given algeb...

Coffin, James Henry

(Encyclopedia)Coffin, James Henry, 1806–73, American mathematician and meteorologist, was professor of mathematics and physics, Lafayette College, 1846–73. In an observatory which he built on Mt. Greylock, Mass...

Toscanelli, Paolo dal Pozzo

(Encyclopedia)Toscanelli, Paolo dal Pozzo päˈōlō däl pôtˈtsō tōskänĕlˈlē [key], 1397–1482, Italian cosmographer and mathematician. A physician by training, he was also known as Paul the Physician. He...

Wallis, John

(Encyclopedia)Wallis, John wŏlˈĭs [key], 1616–1703, English mathematician. He was Savilian professor of geometry at Oxford from 1649. He systematized the use of formulas, introduced the symbol ∞ for infinity...

Bouguer, Pierre

(Encyclopedia)Bouguer, Pierre pyĕr bo͞ogĕrˈ [key], 1698–1758, French mathematician and hydrographer. He made some of the first photometric measurements, calculating the intensity of the light of the sun as co...

Papandreou, George, 1888–1968, Greek political leader

(Encyclopedia)Papandreou, George päˌpəndrāˈo͞o [key], 1888–1968, Greek political leader, father of Andreas Papandreou and grandfather of George Papandreou (b. 1952). As a young man he became involved in ant...