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 |
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Pages (from-to) | 265-272 |
Number of pages | 8 |
Journal | Israel Journal of Mathematics |
Volume | 4 |
Issue number | 4 |
DOIs | |
State | Published - Dec 1966 |