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arXiv math/9209216math.FA
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关于Sidon集与插值集的向量值不等式

On vector-valued inequalities for Sidon sets and sets of interpolation

Nigel J. Kalton

摘要:

设$E$是整数的Sidon子集,$X$是巴拿赫空间.然后皮西尔已表明,$E$ -谱多项式的值在$X$行为就像Rademacher和关于$L_p-$规范。我们考虑了当$X$是拟巴拿赫空间时的情形。对于一般的拟巴拿赫空间我们证明了一个类似的结果成立当且仅当$E$是一个插值集($I_0$ -集).然而,对于某些特殊类的准巴拿赫空间,我们能够证明这样的结果,为更大的集。因此,如果$X$被限制为“自然”,则结果对所有西顿集都成立。我们还考虑空间与pluisubharmonic规范,并介绍了类解析西顿集。

英文摘要:

Let $E$ be a Sidon subset of the integers and suppose $X$ is a Banach space. Then Pisier has shown that $E$-spectral polynomials with values in $X$ behave like Rademacher sums with respect to $L_p-$norms. We consider the situation when $X$ is a quasi-Banach space. For general quasi-Banach spaces we show that a similar result holds if and only if $E$ is a set of interpolation ($I_0$-set). However for certain special classes of quasi-Banach spaces we are able to prove such a result for larger sets. Thus if $X$ is restricted to be ``natural'' then the result holds for all Sidon sets. We also consider spaces with plurisubharmonic norms and introduce the class of analytic Sidon sets.

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