Mathematician:Jean Baptiste Joseph Delambre

Mathematician
French mathematician and astronomer.

Author of well-known books on the history of astronomy from ancient times to the 18th century.

Placed in charge of the mission to measure the meridian from Dunkirk to Rodez in the south of France, taking over the responsibility from, who refused the mission for political reasons.

One of the first astronomers to derive astronomical equations from analytical formulas, formulating the trigonometrical identities now known as Delambre's Analogies.

Nationality
French

History

 * Born: 19 September 1749 in Amiens, France
 * Died: 19 August 1822 in Paris, France

Theorems and Definitions

 * Delambre's Analogies (also known as Gauss's Formulas, for )

Publications

 * 1799: Méthodes analytiques pour la détermination d'un arc du méridien
 * January 1806: Notice historique sur M. Méchain, lue le 5 messidor XIII
 * 1806, 1807, 1810: Base du système métrique décimal, ou Mesure de l'arc du méridien – compris entre les parallèles de Dunkerque et Barcelone, exécutée en 1792 et années suivantes, par MM. Méchain et Delambre (as editor) (3 volumes)


 * 1810: Rapport historique sur le progrès des sciences mathématiques depuis 1799


 * A history of astronomy, comprising four works and six volumes in all:
 * 1817: Histoire de l'astronomie ancienne (2 volumes)
 * 1819: Histoire de l'astronomie du moyen age
 * 1821: Histoire de l'astronomie moderne (2 volumes)
 * 1827: Histoire de l'astronomie au dix-huitième siècle (edited by )


 * 1912: Grandeur et figure de la terre, ouvrage augmenté de notes, de cartes (edited by )

Also known as
Full name and title Jean Baptiste Joseph, chevalier Delambre.

Some sources hyphenate: Jean-Baptiste Joseph Delambre or even Jean-Baptiste-Joseph Delambre.