We study the existence of continuous (linear) operators from the Banach spaces Lip 0 ( M ) of Lipschitz functions on infinite metric spaces M vanishing at a distinguished point and from their predual spaces F ( M ) onto certain Banach spaces, including C(K)-spaces and the spaces c 0 and ℓ 1 . For pairs of spaces Lip 0 ( M ) and C(K) we prove that if they are endowed with topologies weaker than the norm topology, then usually no continuous (linear or not) surjection exists between those spaces. It is also showed that if a metric space M contains a bilipschitz copy of the unit sphere S c 0 of the space c 0 , then Lip 0 ( M ) admits a continuous operator onto ℓ 1 and hence onto c 0 . Using this, we provide several conditions for a space M implying that Lip 0 ( M ) is not a Grothendieck space. Finally, we obtain a new characterization of the Schur property for Lipschitz-free spaces: a space F ( M ) has the Schur property if and only if for every complete discrete metric space N with cardinality d(M) the spaces F ( M ) and F ( N ) are weakly sequentially homeomorphic.

Department of Mathematics Kurt Gödel Research Center University of Vienna Vienna Austria

Department of Mathematics Universität Innsbruck Innsbruck Austria

Faculty of Mathematics and Computer Science Adam Mickiewicz University Poznan Poland

Institute of Mathematics Czech Academy of Sciences Prague Czech Republic

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