• DocumentCode
    811398
  • Title

    Necessary and sufficient conditions for differentiable nonscalar-valued functions to attain extrema

  • Author

    Athans, Michael ; Geering, Hans P.

  • Author_Institution
    Massachusetts Institute of Technology, Cambridge, MA, USA
  • Volume
    18
  • Issue
    2
  • fYear
    1973
  • fDate
    4/1/1973 12:00:00 AM
  • Firstpage
    132
  • Lastpage
    139
  • Abstract
    A self-contained theory of extrema (viz., suprema, maxima, minima, and infima) of differentiable functions of several (possibly infinitely many) variables mapping into finite-dimensional integrally closed directed partially ordered linear spaces is reported. The applicability of the theory to the analysis of linear least squares vector estimation problem is demonstrated.
  • Keywords
    Least-squares estimation; Optimization methods; Calculus; Constraint theory; Control theory; Cost function; Least squares approximation; Mathematical programming; Optimal control; Sufficient conditions; Variable speed drives; Vectors;
  • fLanguage
    English
  • Journal_Title
    Automatic Control, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9286
  • Type

    jour

  • DOI
    10.1109/TAC.1973.1100249
  • Filename
    1100249