Abstract
It is proved that a Banach space is isomorphic to c o or to l p if and only if it has a normalized basis {χi i } i=1 ∞ which is equivalent to every normalized block-basis with respect to {χi i } i=1 ∞ .
| Original language | English |
|---|---|
| Pages (from-to) | 265-272 |
| Number of pages | 8 |
| Journal | Israel Journal of Mathematics |
| Volume | 4 |
| Issue number | 4 |
| DOIs | |
| State | Published - Dec 1966 |