Frédéric Ladislas Joseph Marty (23 June 1911 in
Albi
Albi (; oc, Albi ) is a commune in France, commune in southern France. It is the prefecture of the Tarn (department), Tarn Departments of France, department, on the river Tarn (river), Tarn, 85 km northeast of Toulouse. Its inhabitants ar ...
,
Tarn – 14 June 1940,
Gulf of Finland
The Gulf of Finland ( fi, Suomenlahti; et, Soome laht; rus, Фи́нский зали́в, r=Finskiy zaliv, p=ˈfʲinskʲɪj zɐˈlʲif; sv, Finska viken) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and E ...
) was a French
mathematician
A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems.
Mathematicians are concerned with numbers, data, quantity, mathematical structure, structure, space, Mathematica ...
.
Frédéric Marty's father was the mathematician Joseph Marty (1885–1914), who taught at the lycée d'Albi and as a French army officer was killed in action in WW I.
Frédéric Marty received his doctorate in 1931 from the
École normale supérieure
École may refer to:
* an elementary school in the French educational stages normally followed by secondary education
Secondary education or post-primary education covers two phases on the International Standard Classification of Education sca ...
(ENS). After that he was a ''
maître de conférences'' at
Aix-Marseille University
Aix-Marseille University (AMU; french: Aix-Marseille Université; formally incorporated as ''Université d'Aix-Marseille'') is a public research university located in the Provence region of southern France. It was founded in 1409 when Louis II o ...
. He was a
French Air Force
The French Air and Space Force (AAE) (french: Armée de l'air et de l'espace, ) is the air and space force of the French Armed Forces. It was the first military aviation force in history, formed in 1909 as the , a service arm of the French Ar ...
lieutenant in WW II and was a victim of the
Aero Flight 1631 shootdown when he was a diplomatic courier on board a Finnish plane that was shot down by the
Soviet Air Force
The Soviet Air Forces ( rus, Военно-воздушные силы, r=Voyenno-vozdushnyye sily, VVS; literally "Military Air Forces") were one of the air forces of the Soviet Union. The other was the Soviet Air Defence Forces. The Air Forces ...
.
Marty is known in the theory of
normal families for
Marty's theorem. This theorem from his dissertation states that for any family
of
meromorphic function
In the mathematical field of complex analysis, a meromorphic function on an open subset ''D'' of the complex plane is a function that is holomorphic on all of ''D'' ''except'' for a set of isolated points, which are poles of the function. ...
s,
is normal if and only if
's derived family of spherical derivatives is locally bounded. Marty also founded the theory of hypergroups and
hyperstructures. He was an invited speaker at the
International Congress of Mathematics (ICM) 1936 in
Oslo
Oslo ( , , or ; sma, Oslove) is the capital and most populous city of Norway. It constitutes both a county and a municipality. The municipality of Oslo had a population of in 2022, while the city's greater urban area had a population of ...
.
References
{{DEFAULTSORT:Marty, Frederic
1911 births
1940 deaths
20th-century French mathematicians
Complex analysts
French military personnel killed in World War II
École Normale Supérieure alumni
Academic staff of Aix-Marseille University
Victims of aviation accidents or incidents in Finland
Victims of aircraft shootdowns
French Air Force personnel of World War II