Skip to Main Content

Transactions of the American Mathematical Society

Published by the American Mathematical Society since 1900, Transactions of the American Mathematical Society is devoted to longer research articles in all areas of pure and applied mathematics.

ISSN 1088-6850 (online) ISSN 0002-9947 (print)

The 2020 MCQ for Transactions of the American Mathematical Society is 1.48.

What is MCQ? The Mathematical Citation Quotient (MCQ) measures journal impact by looking at citations over a five-year period. Subscribers to MathSciNet may click through for more detailed information.

 

Convergence of Polynomial Level Sets
HTML articles powered by AMS MathViewer

by J. Ferrera PDF
Trans. Amer. Math. Soc. 350 (1998), 4757-4773 Request permission

Abstract:

In this paper we give a characterization of pointwise and uniform convergence of sequences of homogeneous polynomials on a Banach space by means of the convergence of their level sets. Results are obtained both in the real and the complex cases, as well as some generalizations to the nonhomogeneous case and to holomorphic functions in the complex case. Kuratowski convergence of closed sets is used in order to characterize pointwise convergence. We require uniform convergence of the distance function to get uniform convergence of the sequence of polynomials.
References
  • M. Baronti and P. L. Papini, Convergence of sequences of sets, Methods of functional analysis in approximation theory (Bombay, 1985) Internat. Schriftenreihe Numer. Math., vol. 76, Birkhäuser, Basel, 1986, pp. 135–155. MR 904685
  • Gerald Beer, Convergence of continuous linear functionals and their level sets, Arch. Math. (Basel) 52 (1989), no. 5, 482–491. MR 998621, DOI 10.1007/BF01198356
  • Jon Borwein and Jon Vanderwerff, Dual Kadec-Klee norms and the relationships between Wijsman, slice, and Mosco convergence, Michigan Math. J. 41 (1994), no. 2, 371–387. MR 1278442, DOI 10.1307/mmj/1029005003
  • Joseph Diestel, Sequences and series in Banach spaces, Graduate Texts in Mathematics, vol. 92, Springer-Verlag, New York, 1984. MR 737004, DOI 10.1007/978-1-4612-5200-9
  • K. Kuratowski, Topology. Vol. I, Academic Press, New York-London; Państwowe Wydawnictwo Naukowe [Polish Scientific Publishers], Warsaw, 1966. New edition, revised and augmented; Translated from the French by J. Jaworowski. MR 0217751
  • José G. Llavona, Approximation of continuously differentiable functions, North-Holland Mathematics Studies, vol. 130, North-Holland Publishing Co., Amsterdam, 1986. Notas de Matemática [Mathematical Notes], 112. MR 870155
  • Jorge Mujica, Complex analysis in Banach spaces, North-Holland Mathematics Studies, vol. 120, North-Holland Publishing Co., Amsterdam, 1986. Holomorphic functions and domains of holomorphy in finite and infinite dimensions; Notas de Matemática [Mathematical Notes], 107. MR 842435
Similar Articles
  • Retrieve articles in Transactions of the American Mathematical Society with MSC (1991): 46E25, 12E05
  • Retrieve articles in all journals with MSC (1991): 46E25, 12E05
Additional Information
  • J. Ferrera
  • Affiliation: Departmento Análisis Matemático, Universidad Complutense de Madrid, 28040 Madrid, España
  • Email: ferrera@eucmax.sim.ucm.es
  • Received by editor(s): March 20, 1995
  • Additional Notes: Research partially supported by DGICYT grant PB-0044 (Spain).
  • © Copyright 1998 American Mathematical Society
  • Journal: Trans. Amer. Math. Soc. 350 (1998), 4757-4773
  • MSC (1991): Primary 46E25; Secondary 12E05
  • DOI: https://doi.org/10.1090/S0002-9947-98-02342-3
  • MathSciNet review: 1615959