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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


Convergence of Polynomial Level Sets

Author: J. Ferrera
Journal: Trans. Amer. Math. Soc. 350 (1998), 4757-4773
MSC (1991): Primary 46E25; Secondary 12E05
MathSciNet review: 1615959
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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.

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Additional Information

J. Ferrera
Affiliation: Departmento Análisis Matemático, Universidad Complutense de Madrid, 28040 Madrid, España

PII: S 0002-9947(98)02342-3
Keywords: Polynomials in Banach spaces, set convergence, level sets
Received by editor(s): March 20, 1995
Additional Notes: Research partially supported by DGICYT grant PB-0044 (Spain).
Article copyright: © Copyright 1998 American Mathematical Society

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