Mathematician:François Viète

French mathematician (also known in Latin form as Franciscus Vieta) who pioneered the use of letters in algebraic equations.

Nationality
French

History

 * Born: 1540, Fontenay-le-Comte, Poitou (now Vendée), France
 * Died: 13 Dec 1603 in Paris, France

Theorems

 * Viète's Formulas
 * Vieta's Formula for Pi

Books and Papers

 * Ad harmonicon coeleste (never published)


 * 1571+:
 * Francisci Vietœi universalium inspectionum ad canonem mathematicum liber singularis
 * A book of Trigonometry, in abbreviated Canonen mathematicum


 * 1589: Deschiffrement escription of a letter by the Commander Moreo at Roy Espaigne of his master
 * 1591: In Artem Analyticam Isagoge
 * 1593: Supplementum Geometriae
 * 1595: Ad Mathematics Problema quod Omnibus Totius Orbis Construendum Proposuit Adrianus Romanus, Vietae responsum Francisci
 * 1600: Numbers Potestatum ad Exegesim Resolutioner
 * 1602: Francisci Vietae Fontenaeensis libellorum supplicum Regia magistri in relatio Kalendarii Gregorian vere ad ecclesiasticos doctores exhibits Pontifici Maximi Clementi VIII

Also see

 * : $\S 1.5$: The Importance of Variables in Mathematics (footnote)
 * : Chapter $4$: Lure of the Unknown