For every α < ω₁ we establish the existence of a separable Banach space whose Szlenk index is and which is universal for all separable Banach spaces whose Szlenk index does not exceed . In order to prove that result we provide an intrinsic characterization of which Banach spaces embed into a space admitting an FDD with Tsirelson type upper estimates.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-fm205-2-5, author = {D. Freeman and E. Odell and Th. Schlumprecht and A. Zs\'ak}, title = {Banach spaces of bounded Szlenk index II}, journal = {Fundamenta Mathematicae}, volume = {205}, year = {2009}, pages = {161-177}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm205-2-5} }
D. Freeman; E. Odell; Th. Schlumprecht; A. Zsák. Banach spaces of bounded Szlenk index II. Fundamenta Mathematicae, Tome 205 (2009) pp. 161-177. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-fm205-2-5/