On the complexity of some classes of Banach spaces and non-universality
[摘要] These notes are dedicated to the study of the complexity of several classes of separable Banach spaces. We compute the complexity of the Banach-Saks property, the alternating Banach-Saks property, the complete continuous property, and the LUST property. We also show that the weak Banach-Saks property, the Schur property, the Dunford-Pettis property, the analytic Radon-Nikodym property, the set of Banach spaces whose set of unconditionally converging operators is complemented in its bounded operators, the set of Banach spaces whose set of weakly compact operators is complemented in its bounded operators, and the set of Banach spaces whose set of Banach-Saks operators is complemented in its bounded operators, are all non Borel in $ SB$. At last, we give several applications of those results to non-universality results.
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[效力级别] [学科分类] 数学（综合）
[关键词] Banach-Saks operator;Dunford-Pettis property;analytic Radon-Nikodym property;complete continuous property;Schur property;unconditionally converging operator;weakly compact operator;local structure;non-universality;$\ell_p$-Baire sum;descriptive set theory;tree [时效性]
