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Fields of Extremals and Sufficient Conditions for the Simplest Problem of the Calculus of Variations in n-Variables

In: Variational Analysis and Aerospace Engineering

Author

Listed:
  • Dean A. Carlson

    (American Mathematical Society)

  • George Leitmann

    (University of California at Berkeley)

Abstract

In a 1967 note, Leitmann observed that coordinate transformations may be used to deduce extrema (minimizers or maximizers) of integrals in the simplest problem of the calculus of variations. Subsequently, in a series of papers, starting in 2001, he revived this approach and extended it in a variety of ways. Shortly thereafter, Carlson presented an important generalization of this approach and connected it to Carathéodory’s equivalent problem method. This in turn was followed by a number of joint papers addressing applications to dynamic games, multiple integrals, and other related topics. For the simplest vector-valued variables problem of the calculus of variations, making use of the classical notion of fields of extremals, we employ Leitmann’s direct method, as extended by Carlson, to present an elementary proof ofWeierstrass’ sufficiency theorem for strong local and global extrema.

Suggested Citation

  • Dean A. Carlson & George Leitmann, 2009. "Fields of Extremals and Sufficient Conditions for the Simplest Problem of the Calculus of Variations in n-Variables," Springer Optimization and Its Applications, in: Variational Analysis and Aerospace Engineering, chapter 0, pages 75-89, Springer.
    • Handle: RePEc:spr:spochp:978-0-387-95857-6_5
    DOI: 10.1007/978-0-387-95857-6_5
    as

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