arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.02500math.PR
收藏

Lévy白噪声的定义域

The Domain of Definition of the Lévy White Noise

Julien Fageot, Thomas Humeau

摘要:

可以将Lévy白噪声构造为Gel'fand和Vilenkin意义下的广义随机过程,或Rajput和Rosinski引入的独立离散随机测度。在这篇文章中,我们统一了这两种方法,通过扩展的Lévy白噪声,定义为一个广义随机过程,一个独立的分散的随机措施。然后,我们能够给出一般的可积性条件的Lévy白噪声,从而最大限度地扩大其定义域。基于这种联系,我们提供了新的标准,实际确定的定义域,包括具体的结果,高斯,对称α稳定,广义拉普拉斯,复合泊松白噪声的子族。我们也应用我们的结果来制定一个一般的准则,由Lévy白噪声驱动的线性随机偏微分方程广义解的存在性。

英文摘要:

It is possible to construct Lévy white noises as generalized random processes in the sense of Gel'fand and Vilenkin, or as an independently scattered random measures introduced by Rajput and Rosinski. In this article, we unify those two approaches by extending the Lévy white noise, defined as a generalized random process, to an independently scattered random measure. We are then able to give general integrability conditions for Lévy white noises, thereby maximally enlarging their domain of definition. Based on this connection, we provide new criteria for the practical determination of the domain of definition, including specific results for the subfamilies of Gaussian, symmetric-α-stable, generalized Laplace, and compound Poisson white noises. We also apply our results to formulate a general criterion for the existence of generalized solutions of linear stochastic partial differential equations driven by a Lévy white noise.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑