Publication at Faculty of Mathematics and Physics |
2017
Abstract
We show that the dual of every infinite-dimensional Lipschitzfree Banach space contains an isometric copy of l(infinity) and that it is often the case that a Lipschitz-free Banach space contains a 1-complemented subspace isometric to l(1). Even though we do not know whether the latter is true for every infinite-dimensional Lipschitz-free Banach space, we show that the space is never rotund.
In the last section we survey the relations between isometric embeddability of l(infinity) into X* and containment of a good copy of l(1) in X for a general Banach space X.