Title of article :
On the weak-approximate fixed point property
Author/Authors :
Barroso، نويسنده , , Cleon S. and Lin، نويسنده , , Pei-Kee، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2010
Abstract :
Let X be a Banach space and C a bounded, closed, convex subset of X. C is said to have the weak-approximate fixed point property if for any norm-continuous mapping f : C → C , there exists a sequence { x n } in C such that ( x n − f ( x n ) ) n converges to 0 weakly. It is known that every infinite-dimensional Banach space with the Schur property does not have the weak-approximate fixed point property. In this article, we show that every Asplund space has the weak-approximate fixed point property. Applications to the asymptotic fixed point theory are given.
Keywords :
Weakly null sequences , Rosenthalיs ? 1 -theorem , Fixed point property , Weak topology , Asymptotic approximation
Journal title :
Journal of Mathematical Analysis and Applications
Journal title :
Journal of Mathematical Analysis and Applications