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

 

Intermediate value theorems and fixed point theorems for semi-continuous functions in product spaces


Author: Jean Guillerme
Journal: Proc. Amer. Math. Soc. 123 (1995), 2119-2122
MSC: Primary 54H25
MathSciNet review: 1246525
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Abstract: We prove an intermediate value theorem for noncontinuous functions; as consequences, we obtain coincidence and fixed points theorems for nonmonotone and noncontinuous functions defined and with values in a product space $ {\mathbb{R}^I}$. Some of them, even when the index set I is a singleton, improve recent statements of S. Schmitd.


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Additional Information

DOI: http://dx.doi.org/10.1090/S0002-9939-1995-1246525-9
PII: S 0002-9939(1995)1246525-9
Article copyright: © Copyright 1995 American Mathematical Society