Frans Oort

Frans Oort (born 17 July 1935) is a Dutch mathematician who specializes in algebraic geometry.

Career Oort studied from 1952 to 1958 at Leiden University, where he graduated with a thesis on elliptic curves. He received his doctorate in 1961 in Leiden from and Jaap Murre with thesis Reducible and Multiple Algebraic Curves, but had previously studied under Jean-Pierre Serre in Paris and Aldo Andreotti in Pisa. Oort was from 1961 at the University of Amsterdam, where he became a professor in 1967. In 1977, until his retirement in 2000, he was a professor at Utrecht University.

He was a visiting scholar at several academic institutions, including Harvard University (1966/67) and Aarhus University (1972/73). In 2008 he was the Eilenberg Professor at Columbia University.

His doctoral students include Bas Edixhoven, Michiel Hazewinkel, Aise Johan de Jong, Hendrik Lenstra and Joseph Steenbrink. In 2000 Oort proved a conjecture made by Grothendieck in 1970.

Awards and honors In 1962, Oort made a short contribution Multiple algebraic curves at the International Congress of Mathematicians in Stockholm, but was not an invited speaker. In 2011 he was elected a member of Academia Europaea.

Personal life Oort married and later divorced author (1936–2020).

Selected publications Commutative group schemes, Springer 1966; as editor: Algebraic Geometry, Oslo 1970, Wolters-Noordhoff 1972 with Ke-Zheng Li: Moduli of supersingular abelian varieties, Springer 1998 as editor with Steenbrink and van der Geer: Arithmetic algebraic geometry , Birkhäuser 1991; as editor with Carel Faber and Gerard van der Geer: Moduli of abelian varieties, Birkhäuser 2001

with Ching-Li Chai: