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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 2020 MCQ for Proceedings of the American Mathematical Society is 0.85.

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Finite-dimensional Banach spaces with a.e. differentiable metric projection
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by Theagenis Abatzoglou PDF
Proc. Amer. Math. Soc. 78 (1980), 492-496 Request permission

Abstract:

We prove that in a finite-dimensional Banach space, where the Hessian of the norm square is positive definite on the whole space, except possibly at 0, the metric projection onto any closed set is differentiable a.e.
References
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Additional Information
  • © Copyright 1980 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 78 (1980), 492-496
  • MSC: Primary 41A50; Secondary 41A65
  • DOI: https://doi.org/10.1090/S0002-9939-1980-0556619-8
  • MathSciNet review: 556619