# Adrien-Marie Legendre Biography, Life, Interesting Facts

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**Adrien Marie Legendre** was born on **September 18, 1752**. He was a **French mathematician**. He contributed a lot to the field of mathematics. He researched areas such as **elliptic functions, number theory, calculus and gravitational attractions** among so many other branches of mathematics. He developed the least squares method and also gave the concept of **Legendre transformation.**

## Early life

**Adrien Marie Legendre** was born on September 18, 1752, in Paris, France. He was born into a wealthy family. He attended College Mazarin where he studied physics and mathematics. At college, he won accolades for challenging his thesis on physics and mathematics. He studied mathematics under mathematician **Abbe Joseph Francois Marie.**

## Career

In 1775, **Adrien Marie Legendre** became a faculty for mathematics at the Ecole Militaire, Paris alongside Pierre Simon Laplace. In 1783, he became a member of the French Academy of Sciences after his research on gravitational attraction of elliptic bodies. In 1786, he came up with his most famous work **‘Treatise on Elliptic Functions’.** In the same year, he worked on calculus majoring mostly on the procedures of **Maxima and Minima.**

In 1787, **Adrien Marie Legendre** worked in a Paris Observatory team. The team worked along with **Royal Greenwich Observatory** for studying **geodetic measurements.** He contributed to mathematics by **developing the metric system, the standard metre and logarithmic and trigonometric tables.** In 1799, he became an examiner for mathematics for artillery graduates at Ecole Militaire. He was later appointed in the mathematics section of **the French Academy of Sciences** which was closed during the French Revolution and reopened in 1795.

In 1806, **Adrien Marie Legendre** published the book titled **‘New Methods for the Determination of Comet Orbits’** which was about the methodology of least squares. In 1830, he published **‘Theorie des nombres’** which was all about number theory and the law of quadratic reciprocity.

## Awards and achievements

In 1789, **Adrien Marie Legendre** became a member of the **British Royal Society.** In 1831, he became the **Officer of the Legion d’ Honneur.** In 1832, he became the **Foreign Honorary Member of the American Academy of Arts and Sciences.**

## Personal life

In 1793, **Adrien Marie Legendre** married **Marguerite Claudine.** He died on **January 10, 1833,** after a long illness in Paris, France. He died at the age of eighty one.