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arXiv · 2605.00047

A revised and extended version of McShane-Whitney extensions for fuzzy Lipschitz maps

Eduardo Jiménez-Fernández·Jesús Rodríguez-López·Aurora Sánchez-Martín-Orozco·Enrique A. Sánchez-Pérez
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Abstract

In the paper [E. Jim\'enez-Fern\'andez, J. Rodr\'{\i}guez-L\'opez, E. A. S\'anchez-P\'erez, Fuzzy Sets and Systems 406 (2021),66-81], a McShane-Whitney extension theorem is presented for real-valued fuzzy Lipschitz maps between fuzzy metric spaces. Specifically, the codomain space is considered as a so-called Euclidean fuzzy metric space $(\mathbb{R},M_{\phi,g},\ast).$ However, while the function $\phi$ is only required to be increasing, some results of the paper implicitly assume that $\phi$ is invertible, even though this is not explicitly stated. We propose here an alternative possibility that only requires $\phi$ to be also left-continuous.

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Eduardo Jiménez-Fernández, Jesús Rodríguez-López, Aurora Sánchez-Martín-Orozco, Enrique A. Sánchez-Pérez. 2026-04-29. A revised and extended version of McShane-Whitney extensions for fuzzy Lipschitz maps. https://doi.org/10.1016/j.fss.2025.109731

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