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Poincaré Conjecture

A million-dollar math problem by Borgna Brunner Henri Poincar© posed his famously bedeviling math problem more than a century ago. The Clay Institute's Millennium Problems Birch and…

Pi Day

A day to celebrate all things round by Catherine McNiff 3.1415926535897932. . . Approximated as 3.14, the Greek letter for pi is an irrational (cannot be written as a simple fraction…

Animated Math Videos: Number Sense and Patterns

Infoplase and FactMonster are pleased to present a collection of videos from our partner Pearson Education. Pearson is devoted to creating tools that provide endless opportunities for learners at…

Germain, Sophie

(Encyclopedia) Germain, SophieGermain, Sophiesôfēˈ zhĕrmăNˈ [key], 1776–1831, French mathematician. Although self-taught, she mastered mathematics and corresponded with J. L. Lagrange and C. F. Gauss…

Miller, George Abram

(Encyclopedia) Miller, George Abram, 1863–1951, American mathematician, b. Lehigh co., Pa., grad. Muhlenberg College (B.A., 1887), Ph.D. Cumberland Univ., 1893. He was professor at the Univ. of…

Smith, Henry John Stephen

(Encyclopedia) Smith, Henry John Stephen, 1826–83, British mathematician. He was a lecturer in mathematics (1850–73) and, from 1860 to 1883, Savilian professor of geometry at Oxford. He is especially…

Chern, Shiing-Shen

(Encyclopedia) Chern, Shiing-Shen, 1911–2004, Chinese-American mathematician, b. Kashing (now Jiaxing), China, D.Sc. Hamburg, 1936. While undertaking graduate studies in China (1932–34), Chern…

tensor

(Encyclopedia) tensor, in mathematics, quantity that depends linearly on several vector variables and that varies covariantly with respect to some variables and contravariantly with respect to others…

Perelman, Grigori Yakovlevich

(Encyclopedia) Perelman, Grigori Yakovlevich, 1966–, Russian mathematician. After doing graduate work in the late 1980s for his Candidate of Science degree from Leningrad State Univ. (now St.…

Nicholas of Cusa

(Encyclopedia) Nicholas of Cusa (Nicolaus Cusanus), 1401?–1464, German humanist, scientist, statesman, and philosopher, from 1448 cardinal of the Roman Catholic Church. The son of a fisherman,…