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Fibonacci, Leonardo

(Encyclopedia)Fibonacci, Leonardo lāōnärˈdō fēbōnätˈchē [key], b. c.1170, d. after 1240, Italian mathematician, known also as Leonardo da Pisa. In Liber abaci (1202, 2d ed. 1228), for centuries a standard...

Brahmagupta

(Encyclopedia)Brahmagupta bräˌməgo͝opˈtə [key], c.598–c.660, Indian mathematician and astronomer. He was among the first to meaningfully discuss the concepts of zero and of negative numbers. He wrote in ver...

mathematics

(Encyclopedia)mathematics, deductive study of numbers, geometry, and various abstract constructs, or structures; the latter often “abstract” the features common to several models derived from the empirical, or ...

Harriot, Thomas

(Encyclopedia)Harriot, Thomas hârˈēət [key], 1560–1621, English mathematician and astronomer. He was tutor to Sir Walter Raleigh, who sent him in 1585 to Virginia as surveyor with Sir Richard Grenville. Retur...

factor

(Encyclopedia)factor, in arithmetic, any number that divides a given number evenly, i.e., without any remainder. The factors of 12 are 1, 2, 3, 4, 6, and 12. Similarly in algebra, any one of the algebraic expressio...

Cardano, Girolamo

(Encyclopedia)Cardano, Girolamo or Geronimo jērôˈlämō kärdäˈnō, jārôˈnēmō [key], 1501–76, Italian physician and mathematician. His works on arithmetic and algebra established his reputation. Barred ...

Tarski, Alfred

(Encyclopedia)Tarski, Alfred tärˈskē [key], 1901–83, Polish-American mathematician and philosopher, Ph.D. Univ. of Warsaw, 1924, b. Alfred Teitelbaum, changed his named 1923. He lectured at Warsaw until 1939, ...

Bhaskara

(Encyclopedia)Bhaskara əchärˈyə [key] [Skt.,=learned], b. 1114, Indian mathematician and astronomer. According to the custom, he put his learned treatises into verse, adding, however, explanations in prose. His...

Chuquet, Nicolas

(Encyclopedia)Chuquet, Nicolas nēkôläˈ shükāˈ [key], c.1450–1500, French mathematician, probably b. Paris. Little is known of Chuquet's life. At Lyons in 1484 he composed a manuscript on the science of num...

Regiomontanus

(Encyclopedia)Regiomontanus rēˌjēōmŏnˌtāˈnəs [key] [Lat.,=belonging to the royal mountain, i.e., to Königsberg], 1436–76, German astronomer and mathematician, b. Königsberg. His original name was Johan...
 

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