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arXiv 1606.03263math.PR
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定常增量可调和稳定场:路径行为的上估计

Stationary increments harmonizable stable fields: upper estimates on path behaviour

Antoine Ayache, Geoffrey Boutard

摘要:

研究随机场/过程的样本路径行为是概率论和分形几何等相关领域的经典研究课题。为此,在高斯框架中,很长一段时间以来已经开发了许多方法。它们通常依赖于一些潜在的“好”希尔伯特结构,也可能需要高阶矩的有限性。因此,它们很难被转置到重尾稳定概率分布的框架中。然而,在一些线性非预期的移动平均稳定场/过程的情况下,如线性分数稳定片和线性多分数稳定运动,而新的小波策略已经被证明是成功的,以获得尖锐的连续模和其他结果的样本路径行为。我们的文章的主要目标是表明,尽管固有的困难,在频域,这样的小波方法可以推广和改进,使它也成为富有成效的一般协调稳定设置与固定增量。让我们指出,有很大的差异之间的协调设置和移动平均稳定之一。

英文摘要:

Studying sample path behaviour of stochastic fields/processes is a classical research topic in probability theory and related areas such as fractal geometry. To this end, many methods have been developed since a long time in Gaussian frames. They often rely on some underlying "nice" Hilbertian structure, and can also require finiteness of moments of high order. Therefore, they can hardly be transposed to frames of heavy-tailed stable probability distributions. However, in the case of some linear non-anticipative moving average stable fields/processes, such as the linear fractional stable sheet and the linear multifractional stable motion, rather new wavelet strategies have already proved to be successful in order to obtain sharp moduli of continuity and other results on sample path behaviour. The main goal of our article is to show that, despite the difficulties inherent in the frequency domain, such kind of a wavelet methodology can be generalized and improved, so that it also becomes fruitful in a general harmonizable stable setting with stationary increments. Let us point out that there are large differences between this harmonizable setting and the moving average stable one.

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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