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arXiv 2003.09159math.PR
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多重分形过程:定义、性质和新例子

Multifractal processes: Definition, properties and new examples

Danijel Grahovac

摘要:

我们研究具有标度不变性的随机过程,我们称之为多重分形过程。到目前为止,已知的这类过程的例子并没有超出曼德布洛特最初的级联结构。通过推广自相似过程的定义,给出了多重分形过程的一个新定义。我们建立这些过程的一般属性,并显示现有的例子适合我们的设置。最后,我们定义了一类新的例子的灵感来自Lamperti变换的想法。也就是说,对于任意一对无穷可分分布和一个平稳过程,都可以构造一个多重分形过程。

英文摘要:

We investigate stochastic processes possessing scale invariance properties which we refer to as multifractal processes. The examples of such processes known so far do not go much beyond the original cascade construction of Mandelbrot. We provide a new definition of the multifractal process by generalizing the definition of the self-similar process. We establish general properties of these processes and show how existing examples fit into our setting. Finally, we define a new class of examples inspired by the idea of Lamperti transformation. Namely, for any pair of infinitely divisible distribution and a stationary process one can construct a multifractal process.

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。

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