Isometric embedding of ${\ell }_1$ into Lipschitz-free spaces and ${\ell }_{\infty }$ into their duals

Marek Cúth, Michal Johanis

We show that the dual of every infinite-dimensional Lipschitz-free Banach space contains an isometric copy of ${\ell }_{\infty }$ and that it is often the case that a Lipschitz-free Bana…