Herbert Clemens

from Wikipedia, the free encyclopedia

Charles Herbert Clemens Jr., called Herbert Clemens , (born August 15, 1939 in Dayton , Ohio ) is an American mathematician who deals with (complex) algebraic geometry .

Life

Clemens studied at Holy Cross College with a bachelor's degree in 1961 and received his doctorate in 1966 from the University of California, Berkeley , under Phillip Griffiths (Picard-Lefschetz Theorem for Families of Algebraic Varieties Acquiring Certain Singularities). In 1970 he became an assistant professor and later an associate professor at Columbia University and an associate professor in 1975 and a professor in 1976 at the University of Utah .

In 1972 he proved with Griffiths that smooth cubic 3-varieties are irrational ( Yuri Manin and Wassili Alexejewitsch Iskowskich had already shown this for quarters ), a counterexample to the Lüroth problem (for higher-dimensional varieties to show that rationality follows from unirationality, which Jacob Lüroth proved for curves).

He was invited speaker at the 1986 International Congress of Mathematicians in Berkeley (Curves on higher dimensional complex projective manifolds). In 1974/75 he was a Sloan Fellow .

From 1986 he published the Pacific Journal of Mathematics.

He has been married since 1983 and has three children.

Fonts

  • A scrapbook of complex curve theory, Plenum Press 1980
  • Editor with János Kollár : Current topics in complex algebraic geometry, Cambridge UP 1995
  • with Michael A. Clemens: Geometry for the class room, Springer 1991
  • Editor with Spencer Bloch : Algebraic Geometry: Bowdoin 1985, 2 volumes, AMS 1987
  • He also contributed to Janos Kollar, Shigefumi Mori , Birational geometry of algebraic varieties, Cambridge UP 1998.
  • with Phillip Griffiths: The Intermediate Jacobian of the Cubic Threefold, Annals of Mathematics, Volume 95, 1972, pp. 281-356

Web links

Individual evidence

  1. ↑ Life data according to American Men and Women of Science , Thomson Gale 2004
  2. ↑ Herbert Clemens in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
personal data
SURNAME Clemens, Herbert
ALTERNATIVE NAMES Clemens, Charles Herbert Jr. (Full name)
BRIEF DESCRIPTION American mathematician
DATE OF BIRTH August 15, 1939
PLACE OF BIRTH Dayton , Ohio