(Encyclopedia) SpeusippusSpeusippusspy&oomacr;sĭpˈəs [key], fl. 347–339 b.c., Greek philosopher; disciple and nephew of Plato, whom he succeeded as head of the Academy. Speusippus distinguished…
(Encyclopedia) Briggs, Henry, 1561–1630, English mathematician. He was the first professor of geometry at Gresham College, London (1596–1619), and Savilian professor of astronomy at Oxford (from 1619…
(Encyclopedia) Winslow, Cameron McRaeWinslow, Cameron McRaewĭnzˈlō [key], 1854–1932, American naval officer, b. Washington, D.C. He served on the Nashville in the Spanish-American War, and for his…
(Encyclopedia) numeral, symbol denoting anumber. The symbol is a member of a family of marks, such as letters, figures, or words, which alone or in a group represent the members of a numeration…
Integers include positive whole numbers, negative whole numbers, and zero.
The “set of all integers” is often shown like this:
Integers = {… -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, …}
The dots at…
(Encyclopedia) Novikov, Nikolai IvanovichNovikov, Nikolai Ivanovichnyĭkəlīˈ ēväˈnəvĭch nôˈvēkəf [key], 1744–1818, Russian journalist and publisher. In 1769, with the Drone, he started the vogue of…
(Encyclopedia) seraphseraphsĕrˈəf [key], plural seraphimseraph–ĭm [key], supernatural being. The name seems to derive from the Hebrew word “to burn.” According to the Book of Isaiah, seraphim have…
(Encyclopedia) Fibonacci, LeonardoFibonacci, Leonardolāōnärˈdō fēbōnätˈchē [key], b. c.1170, d. after 1240, Italian mathematician, known also as Leonardo da Pisa. In Liber abaci (1202, 2d ed. 1228),…
(Encyclopedia) BrahmaguptaBrahmaguptabräˌməg&oobreve;pˈtə [key], c.598–c.660, Indian mathematician and astronomer. He was among the first to meaningfully discuss the concepts of zero and of…
(Encyclopedia) octane number, figure of merit representing the resistance of gasoline to premature detonation when exposed to heat and pressure in the combustion chamber of an internal-combustion…
