Joseph Oesterlé

Joseph Oesterlé

Born	1954 (age 62–63) Alsace
Nationality	France
Fields	Mathematics
Institutions	Pierre and Marie Curie University
Alma mater	Paris-Sud 11 University
Doctoral students	Alain Kraus Loïc Merel
Known for	abc conjecture

Joseph Oesterlé (born 1954) is a French mathematician who, along with David Masser, formulated the abc conjecture in 1985. It is perhaps the most important unsolved problem in diophantine analysis.

He is a member of Bourbaki.