Steven Kleiman

Steven Lawrence Kleiman (né à Boston le ) est un mathématicien américain.

Carrière professionnelle

Kleiman est professeur de mathématiques au Massachusetts Institute of Technology. Il a fait ses études universitaires undergraduate au MIT. Il obtient son Ph. D. à l'université Harvard sous la direction d'Oscar Zariski en 1965[1] avec une thèse intitulée « Toward a Numerical Theory of Ampleness », après y avoir étudié avec Oscar Zariski et David Mumford et suivi les cours d'Alexandre Grothendieck. Il est ensuite J. F. Ritt Instructor, puis assistant et professeur associé à l'université Columbia. Entre 1966 et 1970 il assiste régulièrement aux séminaires de Grothendieck à l'IHES[2]. Il rejoint le corps professoral du MIT en 1969[3].

Contributions

Kleiman est connu pour ses travaux en géométrie algébrique et en algèbre commutative. Il a fait des contributions fondamentales en cohomologie motivique, en théorie des modules, en théorie des intersections et en géométrie énumérative. Il est l'un des auteurs les plus prolifiques dans ces domaines[4]

Prix et distinctions

Kleiman était bénéficiaire de la prestigieuse bourse postdoctorale de l'OTAN (1966-1967), d'une bourse Sloan (1968) et d'une bourse Guggenheim (1979).

En 1989, l'université de Copenhague lui a décerné un doctorat honoris causa[5] et en mai 2002, l'Académie norvégienne des sciences et des lettres a organisé une conférence en l'honneur de son 60e anniversaire et l'a élu membre étranger[6]. En 1992, Kleiman a été élu membre étranger de l'Académie royale danoise des sciences et des lettres.

En 2012, il est devenu membre de l'American Mathematical Society[7]. Il a été conférencier invité au Congrès international des mathématiciens de Nice en 1970 (Finiteness theorems for algebraic cycles)[8].

Publications (sélection)

  • Allan B. Altman et Steven L. Kleiman, Introduction to Grothendieck duality theory, Springer-Verlag, coll. « Lecture Notes in Mathematics », .
  • Steven L. Kleiman, « Toward a numerical theory of ampleness », Annals of Mathematics Second Series, vol. 84, no 3,‎ , p. 293–344 (DOI 10.2307/1970447, JSTOR 1970447).
  • Steven Kleiman, « Algebraic cycles and Weil conjectures », dans Jean Giraud, Alexander Grothendieck, Steven Kleiman et Michèle Raynaud (éditeurs), Dix Exposés sur la Cohomologie des Schémas, North-Holland, Amsterdam; Masson, Paris, coll. « Advanced studies in pure mathematics » (no 3), (MR 0269663, lire en ligne), p. 359–386.
  • Steven L. Kleiman, « The transversality of a general translate », Compositio Mathematica, vol. 28, no 3,‎ , p. 287–297.
  • Allen B. Altman et Steven L. Kleiman, « Compactifying the Picard scheme », Advances in Mathematics, vol. 35, no 1,‎ , p. 50–112 (DOI 10.1016/0001-8708(80)90043-2 Accès libre).
  • Steven Kleiman et Anders L. Thorup, « A geometric theory of the Buchsbaum-Rim multiplicity », Journal of Algebra, vol. 167, no 1,‎ , p. 168–231 (DOI 10.1006/jabr.1994.1182 Accès libre).
  • T. Gaffney et Steven L. Kleiman, « Specialization of integral dependence for modules », Inventiones mathematicae, vol. 137, no 3,‎ , p. 541–574 (DOI 10.1007/s002220050335, arXiv alg-geom/9610003).

Notes et références

  1. (en) « Steven Lawrence Kleiman », sur le site du Mathematics Genealogy Project
  2. Souvenirs de Grothendieck, publiés dans : Michael Artin et al., « Alexandre Grothendieck I », Notices de l'AMS, volume 63, n° 3, 2016, p. 253s.
  3. Peter L. Duren et Richard Askey, A Century of Mathematics in America, American Mathematical Society, (ISBN 0-8218-0124-4), p. 543.
  4. R. Alberich, J. M. Miret, J. Miro-Julia, F. Rosselló et S. Xambó, « The Kleiman graph », .
  5. MIT TechTalk, February 14, 1990.
  6. Reports to the president 2001–2002, MIT Mathematics Dept.; Conference in Honor of Steven Kleiman's 60th Birthday, Dan Grayson, Univ. of Illinois.
  7. List of Fellows of the American Mathematical Society, retrieved January 27, 2013.
  8. International Mathematical Union Plenary and Invited Speakers.

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