Asymptotic smoothness in Banach spaces, three-space properties and applications
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- by R. M. Causey, A. Fovelle and G. Lancien HTML | PDF
- Trans. Amer. Math. Soc. 376 (2023), 1895-1928 Request permission
Abstract:
We study four asymptotic smoothness properties of Banach spaces, denoted $\mathsf {T}_p,\mathsf {A}_p, \mathsf {N}_p$, and $\mathsf {P}_p$. We complete their description by proving the missing renorming characterization for $\mathsf {A}_p$. We show that asymptotic uniform flattenability (property $\mathsf {T}_\infty$) and summable Szlenk index (property $\mathsf {A}_\infty$) are three-space properties. Combined with the positive results of the first-named author, Draga, and Kochanek, and with the counterexamples we provide, this completely solves the three-space problem for this family of properties. We also derive from our characterizations of $\mathsf {A}_p$ and $\mathsf {N}_p$ in terms of equivalent renormings, new coarse Lipschitz rigidity results for these classes.References
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Additional Information
- R. M. Causey
- Affiliation: 2265 Joshua Circle, Middletown, Ohio 45044
- MR Author ID: 923618
- Email: rmcausey1701@gmail.com
- A. Fovelle
- Affiliation: Laboratoire de Mathématiques de Besançon, Université Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon Cédex, Besançon, France
- Email: audrey.fovelle@univ-fcomte.fr
- G. Lancien
- Affiliation: Laboratoire de Mathématiques de Besançon, Université Bourgogne Franche-Comté, 16 route de Gray, 25030 Besançon Cédex, Besançon, France
- MR Author ID: 324078
- ORCID: 0000-0002-7901-2594
- Email: gilles.lancien@univ-fcomte.fr
- Received by editor(s): October 21, 2021
- Received by editor(s) in revised form: May 31, 2022, and August 17, 2022
- Published electronically: December 16, 2022
- Additional Notes: The second-named and third-named authors received support from the EIPHI Graduate School (contract ANR-17-EURE-0002).
- © Copyright 2022 American Mathematical Society
- Journal: Trans. Amer. Math. Soc. 376 (2023), 1895-1928
- MSC (2020): Primary 46B20, 46B80; Secondary 46B03, 46B10, 46B26
- DOI: https://doi.org/10.1090/tran/8818
- MathSciNet review: 4549695