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Theorems on multifunctions satisfying a rational inequality. (English) Zbl 0537.54033

The paper generalizes a fixed-point theorem of Brian Fisher in various ways. No examples are presented of functions satisfying the hypotheses of this theorem but not previously published theorems.
Reviewer: R.F.Brown

MSC:

54H25 Fixed-point and coincidence theorems (topological aspects)
54C60 Set-valued maps in general topology
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