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Ivar I. Ekeland (born 2 July 1944, Paris) is a French mathematician of Norwegian descent. Ekeland has written influential monographs and textbooks on nonlinear functional analysis, the calculus of variations, and mathematical economics, as well as popular books on mathematics, which have been published in French, English, and other languages. Ekeland is known as the author of Ekeland's variational principle and for his use of the Shapley–Folkman lemma in optimization theory. He has contributed to the periodic solutions of Hamiltonian systems and particularly to the theory of Kreĭn indices for linear systems (Floquet theory). Ekeland helped to inspire the discussion of chaos theory in Michael Crichton's 1990 novel Jurassic Park.

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  • Ivar Ekeland
  • Ivar Ekeland
  • Ivar Ekeland
  • Ivar Ekeland
  • Ivar Ekeland
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  • Ivar Ekeland es un matemático francés nacido el 2 de julio de 1944 en París. Antiguo alumno de la escuela normal superior (1963-1967) y jefe de investigación en el CNRS, es nombrado doctor en ciencias en 1970. Enseña matemáticas y economía en la universidad de París-Dauphine, en la escuela Politécnica de Francia, en la escuela especial militar de Saint-Cyr y en la Universidad de la Columbia Británica en Vancouver. Fue presidente de la universidad de París-Dauphine de 1989 a 1994. Laureado con el y con el , es también miembro de la . * Datos: Q679779
  • Ivar Ekeland, né le 2 juillet 1944 à Paris, est un mathématicien français.
  • Ivar I. Ekeland (born 2 July 1944, Paris) is a French mathematician of Norwegian descent. Ekeland has written influential monographs and textbooks on nonlinear functional analysis, the calculus of variations, and mathematical economics, as well as popular books on mathematics, which have been published in French, English, and other languages. Ekeland is known as the author of Ekeland's variational principle and for his use of the Shapley–Folkman lemma in optimization theory. He has contributed to the periodic solutions of Hamiltonian systems and particularly to the theory of Kreĭn indices for linear systems (Floquet theory). Ekeland helped to inspire the discussion of chaos theory in Michael Crichton's 1990 novel Jurassic Park.
  • Ivar Ekeland (Paris, 2 de julho de 1944) é um matemático francês de ascendentes noruegueses. Foi palestrante convidado do Congresso Internacional de Matemáticos em Helsinque (1978: Problèmes variationnels non convexe).
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