Jean Ville, also known under the names Jean-André Ville et André Ville, born 24 June 1910 in

Marseille Marseille (; ; see #Name, below) is a city in southern France, the Prefectures in France, prefecture of the Departments of France, department of Bouches-du-Rhône and of the Provence-Alpes-Côte d'Azur Regions of France, region. Situated in the ...

, died 22 January 1989 in

Blois Blois ( ; ) is a commune and the capital city of Loir-et-Cher Departments of France, department, in Centre-Val de Loire, France, on the banks of the lower Loire river between Orléans and Tours. With 45,898 inhabitants by 2019, Blois is the mos ...

, was a French mathematician. He is known for having proved an extension of von Neumman's minimax theorem, as well as contributions in the fields of statistics and economics. He was one of the pioneers of the theory of martingales.

Life

Jean André Ville was the son of Jean Baptiste Ville (1871-1927) and Marie Vernet (1876-1955), both from families from Mosset in

Pyrénées-Orientales Pyrénées-Orientales (; ; ; ), also known as Northern Catalonia, is a departments of France, department of the Regions of France, region of Occitania (administrative region), Occitania, Southern France, adjacent to the northern Spain, Spanish ...

.Jean Pares
'' Jean André Ville (1910-1989) mathematician. Le savant de Mosset ''
His first name was that of his godfather and uncle, Jean Ville, the second, that of his grandfather, André Vernet. André was the first name used in the family, but in his professional life, he used Jean. Bernard d'Orgeval, a classmate, writes in the directory of former students of the ENS 1992 "very discreet about his private life, discretion marked by the use of the first name Jean in his scientific and administrative career, while in the family he was André". He was a former student of the lycée Thiers of

and the

École normale supérieure École or Ecole may refer to: * an elementary school in the French educational stages normally followed by Secondary education in France, secondary education establishments (collège and lycée) * École (river), a tributary of the Seine flowing i ...

(Promo 1929), of which he entered first. Ville's inequality is named for him, after he proved it in 1939.

Publications

* ''Applications de la théorie des probabilités aux jeux de hasard'', d'

Émile Borel Félix Édouard Justin Émile Borel (; 7 January 1871 – 3 February 1956) was a French people, French mathematician and politician. As a mathematician, he was known for his founding work in the areas of measure theory and probability. Biograp ...

et Jean Ville (1938)

References

{{DEFAULTSORT:Ville, Jean 1910 births 1989 deaths Scientists from Marseille 20th-century French mathematicians Game theorists École Normale Supérieure alumni