The Banach-Saks index of intersection. (English) Zbl 1281.46022
Summary: We estimate the Banach-Saks index of intersection of two spaces with symmetric bases from below by indices of these spaces. We also show an example of Orlicz spaces for which we cannot estimate the Banach-Saks index of intersection in the same way as above.
MSC:
46B45 | Banach sequence spaces |