For each ordinal α < ω₁, we prove the existence of a Banach space with a basis and Szlenk index which is universal for the class of separable Banach spaces with Szlenk index not exceeding . Our proof involves developing a characterization of which Banach spaces embed into spaces with an FDD with upper Schreier space estimates.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm216-2-4, author = {Ryan Causey}, title = {Estimation of the Szlenk index of Banach spaces via Schreier spaces}, journal = {Studia Mathematica}, volume = {215}, year = {2013}, pages = {149-178}, zbl = {06189632}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm216-2-4} }
Ryan Causey. Estimation of the Szlenk index of Banach spaces via Schreier spaces. Studia Mathematica, Tome 215 (2013) pp. 149-178. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm216-2-4/