Chasles

Measure theory applications
History of poisson's ratio
Lebesgue phd thesis

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Pierre Borel

French chemist, alchemist, physician, and botanist (1620–1671)

For the French writer of the nineteenth century, see Petrus Borel.

Pierre Borel
Portrait of Pierre Borel by Jacques Pauthe [fr]
Born	c. 1620 Castres
Died	1671 (aged 50–51) Paris, France
Occupations	Chemist alchemist physician botanist

Pierre Borel (Latin: Petrus Borellius; c. 1620 – 1671) was a French chemist, alchemist, physician, and botanist.

Biography

Borel was born in Castresc. 1620. He became a doctor of medicine at the University of Montpellier in 1640. In 1654, he became physician to the King of France, Louis XIV.^[1]

In 1663, he married Esther de Bonnafous. In 1674, he became a member of the Académie française. He died in Paris in 1671.^[1]

He concerned himself with an eclectic range of subjects such as optics, ancient history, philology, and bibliography.

Borel appears in the novel The Case of Charles Dexter Ward by H. P. Lovecraft, where he is represented as a necrom

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Émile Borel

French mathematician (1871–1956)

Not to be confused with Armand Borel.

Félix Édouard Justin Émile Borel (French:[bɔʁɛl]; 7 January 1871 – 3 February 1956)^[1] was a Frenchmathematician^[2] and politician. As a mathematician, he was known for his founding work in the areas of measure theory and probability.

Biography

Borel was born in Saint-Affrique, Aveyron, the son of a Protestant pastor.^[3] He studied at the Collège Sainte-Barbe and Lycée Louis-le-Grand before applying to both the École normale supérieure and the École Polytechnique. He qualified in the first position for both and chose to attend the former institution in 1889. That year he also won the concours général, an annual national mathematics competition. After graduating in 1892, he placed first in the agrégation, a competitive civil service examination leading to the position of professeur agrégé. His thesis, published in 1893, was titled Sur quelques points de la théorie des fonctions ("On some points in the theory of functions"). That year, Borel st

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Borel, Félix Édouard Justin Émile (1871–1956)

Émile Borel was born on January 7, 1871 in France. He taught at Ecole Normale Supérieure in Paris and later at the Sorbonne. Following his academic career, Borel served in the French government in the Chamber of Deputies and later as Minister of the Navy. He was arrested and imprisoned briefly during the Vichy government of World War II. Borel was awarded the Croix de Guerre in 1918, the Resistance Medal in 1945, and the Grand Croix Legion d'Honneur in 1950.

Émile Borel made fundamental contributions in set theory, measure theory, and functional analysis. He also contributed to the theory of divergent series and to game theory. In probability theory, Borel's name, along with Francesso Cantelli, is linked to the famous Borel-Cantelli lemmas that give conditions for the occurrence of infinitely many events to have probability 0 or 1.

Borel died on February 3, 1956 in Paris, France

Primary Source

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