Characterising subspaces of Banach spaces with a Schauder basis having the shift property
Volume 207 / 2011
Studia Mathematica 207 (2011), 59-73 MSC: Primary 46B03. DOI: 10.4064/sm207-1-4
We give an intrinsic characterisation of the separable reflexive Banach spaces that embed into separable reflexive spaces with an unconditional basis all of whose normalised block sequences with the same growth rate are equivalent. This uses methods of E. Odell and T. Schlumprecht.