[HTML][HTML] On strongly norm attaining Lipschitz maps

B Cascales, R Chiclana, LC García-Lirola… - Journal of Functional …, 2019 - Elsevier
We study the set SNA (M, Y) of those Lipschitz maps from a (complete pointed) metric space
M to a Banach space Y which (strongly) attain their Lipschitz norm (ie the supremum …

Symmetric strong diameter two property

R Haller, J Langemets, V Lima, R Nadel - Mediterranean Journal of …, 2019 - Springer
We study Banach spaces with the property that, given a finite number of slices of the unit
ball, there exists a direction such that all these slices contain a line segment of length almost …

[HTML][HTML] Octahedral norms in duals and biduals of Lipschitz-free spaces

J Langemets, AR Zoca - Journal of Functional Analysis, 2020 - Elsevier
We continue with the study of octahedral norms in the context of spaces of Lipschitz
functions and in their duals. First, we prove that the norm of F (M)⁎⁎ is octahedral as soon …

Transfinite almost square Banach spaces

A Avilés, S Ciaci, J Langemets, A Lissitsin… - arXiv preprint arXiv …, 2022 - arxiv.org
It is known that a Banach space contains an isomorphic copy of $ c_0 $ if, and only if, it can
be equivalently renormed to be almost square. We introduce and study transfinite versions …

Diameter two properties for spaces of Lipschitz functions

R Haller, A Ostrak, M Põldvere - Journal of Functional Analysis, 2024 - Elsevier
We solve some open problems regarding diameter two properties within the class of Banach
spaces of real-valued Lipschitz functions by using de Leeuw's transform. Namely, we show …

The Mazur-Ulam property for a Banach space which satisfies a separation condition

O Hatori - arXiv preprint arXiv:2205.01888, 2022 - arxiv.org
We study $ C $-rich spaces, lush spaces, and $ C $-extremely regular spaces concerning
with the Mazur-Ulam property. We show that a uniform algebra and the real part of a uniform …

The Lipschitz-free space over a length space is locally almost square but never almost square

R Haller, JK Kaasik, A Ostrak - Mediterranean Journal of Mathematics, 2023 - Springer
We prove that the Lipschitz-free space over a metric space M is locally almost square
whenever M is a length space. Consequently, the Lipschitz-free space is locally almost …

Diameter two properties in some vector-valued function spaces

HJ Lee, HJ Tag - Revista de la Real Academia de Ciencias Exactas …, 2022 - Springer
We introduce a vector-valued version of a uniform algebra, called the vector-valued function
space over a uniform algebra. The diameter two properties of the vector-valued function …

[HTML][HTML] Characterisation of the weak-star symmetric strong diameter 2 property in Lipschitz spaces

A Ostrak - Journal of Mathematical Analysis and Applications, 2020 - Elsevier
We give a characterisation of the weak⁎ symmetric strong diameter 2 property for Lipschitz
function spaces in terms of a property of the corresponding metric space. Using this …

A characterisation of the Daugavet property in spaces of vector-valued Lipschitz functions

R Medina, AR Zoca - arXiv preprint arXiv:2305.05956, 2023 - arxiv.org
Let $ M $ be a metric space and $ X $ be a Banach space. In this paper we address several
questions about the structure of $\mathcal F (M)\widehat {\otimes} _\pi X $ and $\mathop …