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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)

 

A fixed-point theorem for $UV^n$ usco maps


Author: Valentin G. Gutev
Journal: Proc. Amer. Math. Soc. 124 (1996), 945-952
MSC (1991): Primary 54H25, 54C60; Secondary 54B15
MathSciNet review: 1343695
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Abstract: The familiar fixed-point theorem of Kakutani is strengthened by weakening the hypotheses on the set-valued mapping. Applications are made for $UV^n$ and $UV^\omega$ decompositions of compact metric spaces.


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Additional Information

Valentin G. Gutev
Affiliation: Department of Mathematics, University of Sofia, Sofia, Bulgaria
Address at time of publication: Institute of Mathematics, Bulgarian Academy of Sciences, 1090 Sofia, Bulgaria
Email: gutev@bgcict.acad.bg, gutev@fmi.uni-sofia.bg

DOI: http://dx.doi.org/10.1090/S0002-9939-96-03491-0
PII: S 0002-9939(96)03491-0
Keywords: Set-valued mapping, upper semi-continuous, $UV^n$ set, decomposition
Received by editor(s): September 10, 1993
Additional Notes: This research was supported in part by NSF at the Bulgarian Ministry of Science and Education under grant MM-420/94.
Communicated by: James E. West
Article copyright: © Copyright 1996 American Mathematical Society