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arXiv 2304.00526math.PR
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稳定密度、分数阶积分与 Mittag-Leffler 函数

Stable Densities, Fractional Integrals and the Mittag-Leffler Function

Nomvelo Karabo Sibisi

AI总结:

本文利用单侧稳定密度的 Riemann–Liouville 分数阶积分及其 gamma 尺度混合,给出三参数 Prabhakar 函数的新积分表示,并表明其对应四参数分布的 Laplace 变换。

摘要:

本文结合概率论与分数阶微积分,推导了三参数 Mittag-Leffler 函数(即 Prabhakar 函数)的一种新型积分表示,其中三个参数由四个基础参数组合而成。基本概念是单侧稳定密度在以尺度因子为条件下的 Riemann–Liouville 分数阶积分。对服从 gamma 分布的尺度因子进行积分,会产生 Riemann–Liouville 积分的混合。四个基础参数的一种特定组合,可将 Prabhakar 函数表示为不同尺度下 Riemann–Liouville 积分的加权混合。以这种方式构造的 Prabhakar 函数是一个四参数分布的 Laplace 变换。该一般方法将多种已知结果作为特例给出,尤其是双参数广义 Mittag-Leffler 分布。

英文摘要:

This paper combines probability theory and fractional calculus to derive a novel integral representation of the three-parameter Mittag-Leffler function or Prabhakar function, where the three parameters are combinations of four base parameters. The fundamental concept is the Riemann-Liouville fractional integral of the one-sided stable density, conditioned on a scale factor. Integrating with respect to a gamma-distributed scale factor induces a mixture of Riemann-Liouville integrals. A particular combination of four base parameters leads to a representation of the Prabhakar function as a weighted mixture of Riemann-Liouville integrals at different scales. The Prabhakar function constructed in this manner is the Laplace transform of a four-parameter distribution. This general approach gives various known results as special cases (notably, the two-parameter generalised Mittag-Leffler distribution).

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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