1994/07/22 by Spiros A. Argyros, Argyros, Spiros A., Irene Deliyanni +1
Mathematics · #46B20 #Advanced Banach Space Theory #Advanced Harmonic Analysis Research #FOS: Mathematics #Functional Analysis (math.FA) #Holomorphic and Operator Theory
paper · pdf · doi:10.48550/arxiv.math/9407210
openalex publication_date 1994/07/22 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Two examples of asymptotic ℓ1 Banach spaces are given. The first, Xu, has an unconditional basis and is arbitrarily distortable. The second, X, does not contain any unconditional basic sequence. Both are spaces of the type of Tsirelson. We thus answer a question raised by W.T.Gowers.