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On Fan's extensions of Browder's fixed point theorems for multi-valued inward mappings

Published online by Cambridge University Press:  09 April 2009

Cheng-Ming Lee
Affiliation:
Department of Mathematics University of Wisconsin, Milwaukee Milwaukee, Wisconsin 53201, U.S.A.
Kok-Keong Tan
Affiliation:
Department of Mathematics Dalhousie UniversityHalifax Nova Scotia, Canada
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Abstract

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Some fixed point theorems are obtained for weekly inward mappings which extend or generalize those results by K. Fan, B. Halpern or S. Reich. Various formulations of inward and outward concepts are also briefly discussed.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 1978

References

Browder, F. E. (1968), “The fixed point theory of multi-valued mappings in topological vector spaces”, Math. Ann. 177, 283301.Google Scholar
Fan, K. (1961), “A generalization of Tychonoff;s fixed point theorem”, Math. Annalen 142, 305310.Google Scholar
Fan, K. (1969), “Extensions of two fixed point theorems of F. E. Browder”, Math. Z. 112, 234240.Google Scholar
Halpern, B. (1970), “Fixed point theorems for set-valued maps in infinite dimensional spaces”, Math. Ann. 189, 8798.CrossRefGoogle Scholar
Reich, S. (1972), “Fixed points in locally convex spaces”, Math. Z. 125, 1731.CrossRefGoogle Scholar