English

Tingley's problem for complex Banach spaces which do not satisfy the Hausdorff distance condition

Functional Analysis 2023-06-05 v2

Abstract

In 2022, Hatori gave a sufficient condition for complex Banach spaces to have the complex Mazur--Ulam property. In this paper, we introduce a class of complex Banach spaces BB that do not satisfy the condition but enjoy the property that every surjective isometry on the unit sphere of such BB admits an extension to a surjective real linear isometry on the whole space BB. Typical examples of Banach spaces studied in this note are the spaces Lip([0,1]){\rm Lip}([0,1]) of all Lipschitz complex-valued functions on [0,1][0,1] and C1([0,1])C^1([0,1]) of all continuously differentiable complex-valued functions on [0,1][0,1] equipped with the norm f(0)+f|f(0)|+\|f'\|_\infty.

Keywords

Cite

@article{arxiv.2210.17131,
  title  = {Tingley's problem for complex Banach spaces which do not satisfy the Hausdorff distance condition},
  author = {David Cabezas and María Cueto-Avellaneda and Yuta Enami and Takeshi Miura and Antonio M. Peralta},
  journal= {arXiv preprint arXiv:2210.17131},
  year   = {2023}
}