collaborators

6 papers

math.FA2026

Lipschitz-free spaces over separable Banach spaces and their complementability in the bidual

Marek Cúth, Ondřej F. K. Kalenda

We prove that the Lipschitz-free space over a separable Banach space is complemented in its bidual if and only if the underlying Banach space is isomorphic to a Hilbert space. This…

math.FA2026

Isometries without linear shadows: failure of Figiel's theorem beyond local convexity

Fernando Albiac, José L. Ansorena, Marek Cúth

A classical theorem of Figiel asserts that every isometric embedding between real Banach spaces, with , admits a linear contractive left inverse on the clo…

math.FA2026

Structural consequences of the Schur -property for Lipschitz-free -spaces

Fernando Albiac, José L. Ansorena, Marek Cúth

Let . We show that the Schur -property provides a powerful structural principle for Lipschitz-free -spaces. Our main result asserts that has t…

math.FA2026

Lipschitz-free spaces over uniformly discrete metric spaces are 3-Schur

Marek Cúth, Ondřej F. K. Kalenda

We prove that the Lipschitz-free space over any uniformly discrete metric space has the 3-Schur property

math.FA2026

The classification of spaces for countable compacta by positive isomorphisms

Marek Cúth, Jonáš Havelka, Jakub Rondoš +1

We study the classification of spaces of continuous functions under positive linear maps. For infinite countable compacta, we show that whenever and are isomor…

math.FA2025

Lipschitz free -spaces for in the light of the Schur -property and the compact reduction

Fernando Albiac, José L. Ansorena, Jan Bíma +1

The geometric analysis of non-locally convex quasi-Banach spaces presents rich and nuanced challenges. In this paper, we introduce the Schur -property and the strong Schur -p…