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arXiv 1504.05072math.PR
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高斯空间中局部极限定理与小数定律的统一方法

A unified approach to local limit theorems in Gaussian spaces and the law of small numbers

Alberto Lanconelli

摘要:

通过重新制定的局部极限定理和法律的小数,这是通过工作在空间中自然相关的极限分布,我们发现了一个一般的和抽象的框架,调查类型的极限定理。从这个新的角度来看,卷积和标度算子中使用的经典结果之前提到的将被识别为威克产品和第二量子化运营商,分别。这就是我们方法的优点:威克乘积和二次量子化算子的定义和大多数性质不依赖于(经过必要的修改)底层的概率测度。在H的帮助下,我们证明了Gaussian和Poisson Wick乘积的Older-Young型不等式的L^1收敛性。我们注意到,我们的方法扩展到无限维高斯空间没有额外的假设。

英文摘要:

Through a reformulation of the local limit theorem and law of small numbers, which is obtained by working in the spaces naturally associated to the limiting distributions, we discover a general and abstract framework for the investigation of that type of limit theorems. From this new perspective, the convolution and scaling operators utilized in the classical results mentioned before will be identified with the Wick product and second quantization operators, respectively. And here is the advantage of our approach: definitions and most of the properties of Wick products and second quantization operators do not depend (mutatis mutandis) on the underlying probability measure. Then, with the help of Holder-Young-type inequalities for Gaussian and Poisson Wick products proved in previous papers, we show the L^1 convergence of the densities towards the desired limit. We remark that our approach extends without additional assumptions to infinite dimensional Gaussian spaces.

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