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Multi-valued mappings and Lefschetz fixed point theorems

Published online by Cambridge University Press:  24 October 2008

Michael J. Powers
Michael J. Powers
Affiliation:
Northern Illinois University, DeKalb, Illinois 60115, U.S.A.
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Extract

By a multi-valued map from a space X to a space Y we mean a map which assigns to each point x in X a non-empty subset F(x) of Y. When X = Y, a point x in X is a fized point for F if x is in F(x).

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 68 , Issue 3 , November 1970 , pp. 619 - 630
Copyright
Copyright © Cambridge Philosophical Society 1970

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References

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