不同构于其修正型的更多混合Tsirelson空间
More Mixed Tsirelson Spaces That Are Not Isomorphic To Their Modified Versions
摘要:
混合Tsirelson空间类是巴拿赫空间结构理论发展的一个重要例证来源。相关类的修改的混合Tsirelson空间也得到了很好的研究。本文研究了混合Tsirelson空间T[(S_n,θ_{n})_{n=1}^{ \infty }]及其改进型T_{M} [(S_{n},θ_{n})_{n=1}^{ \infty }]的同构比较问题.证明了对于一大类参数(θ_{n}),这些空间不是同构的。
英文摘要:
The class of mixed Tsirelson spaces is an important source of examples in the recent development of the structure theory of Banach spaces. The related class of modified mixed Tsirelson spaces has also been well studied. In the present paper, we investigate the problem of comparing isomorphically the mixed Tsirelson space T[(S_n,θ_{n})_{n=1}^{\infty}] and its modified version T_{M}[(S_{n},θ_{n})_{n=1}^{\infty}]. It is shown that these spaces are not isomorphic for a large class of parameters (θ_{n}).
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