José Luis Massera

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Massera 2002

José Luis Massera (born June 8, 1915 in Genoa , † September 9, 2002 in Montevideo ) was a communist politician and mathematician from Uruguay who dealt with the stability of differential equations.

Life

Massera was born in Genoa to Uruguayan parents - his father was a professor of philosophy and a lawyer. He went to school in Europe and the USA and then studied in Montevideo to become an engineer. He stayed at the university, where he was inspired by guest lectures on topology by Rey Pastor in the 1930s , and founded the Institute of Mathematics there with Rafael Laguardia. He also founded a local school of mathematicians who dealt with differential equations and had close contacts with neighboring Argentina.

Massera had been a member of the Partido Comunista de Uruguay since 1941 and on its executive council.

From October 20, 1960 to January 15, 1961 he represented the Department of Montevideo in the 38th legislative period, initially as deputy member of the Partido Comunista de Uruguay (PCU) in the Cámara de Representantes . From February 15, 1963 to February 14, 1972 he then took the electoral mandate for a full mandate as a member of parliament, which he exercised for the Frente Izquierda de Liberación, in the two following legislative periods . He is considered one of the co-founders of the Frente Amplio .

After the civil-military dictatorship took place in Uruguay from 1973 onwards, he was imprisoned from 1975 to 1984 and was tortured during this time. A large number of mathematicians such as Jean Dieudonné and Laurent Schwartz campaigned for his release at the time (Schwartz himself traveled to Uruguay when he was in Brazil and spoke with the responsible minister).

He dealt mainly with the stability of ordinary differential equations in the successor of Lyapunov . A lemma and a sentence are named after him here.

Awards

Massera has multiple honorary doctorates (Rome, Berlin, Budapest, Nice, Havana, Rio de Janeiro, Quito, Mexico, San Andres in Bolivia and his own university in Montevideo 1991).

Fonts

  • On Liapounoff's conditions of stability, Annals of Mathematics, Volume 50, 1949, pp. 705-721
  • The existence of periodic solutions of systems of differential equations, Duke Mathematical Journal, Volume 17, 1950, pp. 457-475
  • Contributions to stability theory, Annals of Mathematics, Volume 64, 1956, pp. 182-206
  • with Juan Jorge Schäffer Linear differential equations and function spaces , Pure and Applied Mathematics, Volume 21, Academic Press, Boston 1966

Web links

Individual evidence

  1. ↑ List of Uruguayan parliamentarians from 1830 to 2005 at www.parlamento.gub.uy ( Memento of February 4, 2014 in the Internet Archive ) (PDF; 7.45 MB), accessed on January 19, 2013
  2. ↑ José Luis Massera (8/6/1915 - 9/9/2002): In Memoriam , accessed on January 19, 2013
personal data
SURNAME Massera, José Luis
BRIEF DESCRIPTION Uruguayan mathematician
DATE OF BIRTH June 8, 1915
PLACE OF BIRTH Genoa
DATE OF DEATH September 9, 2002
Place of death Montevideo