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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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A necessary and sufficient condition for upper hemicontinuous set-valued mappings without compact-values being upper demicontinuous
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by Gan-Shang Yang and George Xian-Zhi Yuan PDF
Proc. Amer. Math. Soc. 126 (1998), 3539-3544 Request permission

Abstract:

The purpose of this article is to give a characterization of an upper hemicontinuous mapping with non-empty convex values being upper demicontinuous, i.e., we show that an upper hemicontinuous set-valued mapping with non-empty convex values (not necessarily compact-valued) is upper demicontinuous if and only if the set-valued mapping has no interior asymptotic plane.
References
  • Jean-Pierre Aubin and Ivar Ekeland, Applied nonlinear analysis, Pure and Applied Mathematics (New York), John Wiley & Sons, Inc., New York, 1984. A Wiley-Interscience Publication. MR 749753
  • Jean-Pierre Aubin and Hélène Frankowska, Set-valued analysis, Systems & Control: Foundations & Applications, vol. 2, Birkhäuser Boston, Inc., Boston, MA, 1990. MR 1048347
  • Ky Fan, A minimax inequality and applications, Inequalities, III (Proc. Third Sympos., Univ. California, Los Angeles, Calif., 1969; dedicated to the memory of Theodore S. Motzkin), Academic Press, New York, 1972, pp. 103–113. MR 0341029
  • Erwin Klein and Anthony C. Thompson, Theory of correspondences, Canadian Mathematical Society Series of Monographs and Advanced Texts, John Wiley & Sons, Inc., New York, 1984. Including applications to mathematical economics; A Wiley-Interscience Publication. MR 752692
  • Mau-Hsiang Shih and Kok-Keong Tan, Covering theorems of convex sets related to fixed-point theorems, Nonlinear and convex analysis (Santa Barbara, Calif., 1985) Lecture Notes in Pure and Appl. Math., vol. 107, Dekker, New York, 1987, pp. 235–244. MR 892795
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Additional Information
  • Gan-Shang Yang
  • Affiliation: Department of Mathematics, Yunnan National Institute, Kunming, China 650031
  • George Xian-Zhi Yuan
  • Affiliation: Department of Mathematics, The University of Queensland, Brisbane, Queensland, Australia 4072
  • Email: xzy@maths.uq.edu.au
  • Received by editor(s): February 26, 1997
  • Additional Notes: This project was supported in part by the Australian Research Council.
  • Communicated by: David R. Larson
  • © Copyright 1998 American Mathematical Society
  • Journal: Proc. Amer. Math. Soc. 126 (1998), 3539-3544
  • MSC (1991): Primary 47H04, 54C60
  • DOI: https://doi.org/10.1090/S0002-9939-98-05082-5
  • MathSciNet review: 1628436