Tadeusz Kuczumow, Simeon Reich
Opial's property and James' quasi-reflexive spaces

Comment.Math.Univ.Carolinae 35,2 (1994) 283-289.

Abstract:Two of James' three quasi-reflexive spaces, as well as the James Tree, have the uniform $w^{\ast }$-Opial property.

Keywords: fixed points, James' quasi-reflexive spaces, James Tree, nonexpansive mappings, Opial's property, the demiclosedness principle
AMS Subject Classification: Primary 46B20, 47H10