English

Some remarks on the structure of Lipschitz-free spaces

Functional Analysis 2017-01-03 v3

Abstract

We give several structural results concerning the Lipschitz-free spaces F(M)\mathcal F(M), where MM is a metric space. We show that F(M)\mathcal F(M) contains a complemented copy of 1(Γ)\ell_1(\Gamma), where Γ=dens(M)\Gamma=\text{dens}(M). If N\mathcal N is the net in a finite dimensional Banach space XX, we show that F(N)\mathcal F(\mathcal N) is isomorphic to its square. If XX contains a complemented copy of p,c0\ell_p, c_0 then F(N)\mathcal F(\mathcal N) is isomorphic to its 1\ell_1-sum. Finally, we prove that for all XC(K)X\cong C(K) spaces F(N)\mathcal F(\mathcal N) are mutually isomorphic spaces with a Schauder basis.

Keywords

Cite

@article{arxiv.1606.03926,
  title  = {Some remarks on the structure of Lipschitz-free spaces},
  author = {Petr Hájek and Matěj Novotný},
  journal= {arXiv preprint arXiv:1606.03926},
  year   = {2017}
}