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Proceedings of the American Mathematical Society

Published by the American Mathematical Society since 1950, Proceedings of the American Mathematical Society is devoted to shorter research articles in all areas of pure and applied mathematics.

ISSN 1088-6826 (online) ISSN 0002-9939 (print)

The 2024 MCQ for Proceedings of the American Mathematical Society is 0.85.

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On matrix approximation
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by Shmuel Friedland
Proc. Amer. Math. Soc. 51 (1975), 41-43
DOI: https://doi.org/10.1090/S0002-9939-1975-0371052-8
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Abstract:

In this paper we give an algebraic characterization of the best approximants to a given matrix $A$ from a real line spanned by a matrix $B$. The distance $||A - \alpha B||$ is taken to be the spectral norm of $A - \alpha B$.
References
  • Ioan A. Rus, Un principe du maximum pour les solutions d’un système fortement elliptique, Glasnik Mat. Ser. III 4(24) (1969), 75–78 (French, with Serbo-Croatian summary). MR 240444
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Bibliographic Information
  • © Copyright 1975 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 51 (1975), 41-43
  • MSC: Primary 65F35; Secondary 15A60, 41A65
  • DOI: https://doi.org/10.1090/S0002-9939-1975-0371052-8
  • MathSciNet review: 0371052