| Title | On Musielak-Orlicz Sequence Spaces with an Asymptotic $\ell_\infty$ dual |
| Publication Type | Journal Article |
| Year of Publication | 2009 |
| Authors | Zlatanov B. |
| Journal | Annuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique |
| Volume | 99 |
| Keywords | asymptotic $\ell_\infty$ space, asymptotically isometric copy of $\ell_1$, fixed point property, Mushielak--Orlicz sequence spaces, weakly compact |
| Abstract | We investigate Mushielak-Orlicz sequence spaces $\ell_\Phi$ with a dual $\ell_\Phi^{*}$, which is stabilized asymptotic $\ell_\infty$ with respect to the unit vector basis. We give a complete characterization of the bounded relatively weakly compact subsets $K\subset\ell_\Phi$. We prove that $\ell_\Phi$ is saturated with asymptotically isometric copies of $\ell_1$ and thus $\ell_\Phi$ fails the fixed point property for closed, bounded convex sets and non--expansive (or contractive) maps on them. |
| 2000 MSC | 46B20, 46B45, 46E30, 46A45, 47H10 |
| Attachment | Size |
|---|---|
| 1.03 MB |