Type and infratype in symmetric sequence spaces (Q1766469)

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scientific article; zbMATH DE number 2141372
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Type and infratype in symmetric sequence spaces
scientific article; zbMATH DE number 2141372

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    Type and infratype in symmetric sequence spaces (English)
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    7 March 2005
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    A Banach space of type \(p\) is also of infratype \(p\). The author proved in [Invent. Math. 107, No. 1, 41--59 (1992; Zbl 0788.46022)] that the converse is true for all \(p< 2\). In the present paper, he proves that the converse does not hold for \(p= 2\). He constructs a symmetric sequence space that is of infratype 2 but not of type 2.
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    Banach sequence spaces
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    type
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    cotype
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    infratype
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    sup-cotype
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    symmetric sequence spaces
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