Mathematician:François Viète

Mathematician
French amateur mathematician, trained in law, who became a privy councillor under Henry IV of France.

Contributed to many of the early developments of trigonometry and algebra.

Pioneered the use of letters in algebraic equations.

One of the first to use decimal fractions as a matter of course in his published works.

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

Publications

 * Ad harmonicon coeleste (never published)


 * 1571+: Francisci Vietœi universalium inspectionum ad canonem mathematicum liber singularis
 * 1579: Canon mathematicus seu ad triangula ("The Mathematical Canon Applied to Triangles")
 * 1589: Deschiffrement escription of a letter by the Commander Moreo at Roy Espaigne of his master
 * 1591: In Artem Analyticam Isagoge ("Introduction to the Analytical Arts")
 * 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
 * 1615: De aequationem recognitione et emendatione ("On the Recognition and Emendation of Equations")

Also known as
François Viète is also known by the Latin form of his name Franciscus Vieta.