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Keywords:
fixed points; James' quasi-reflexive spaces; James Tree; nonexpansive mappings; Opial's property; the demiclosedness principle
fixed points; James' quasi-reflexive spaces; James Tree; nonexpansive mappings; Opial's property; the demiclosedness principle
Summary:
Two of James' three quasi-reflexive spaces, as well as the James Tree, have the uniform $w^{\ast }$-Opial property.
References:
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