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arXiv 1611.03364math.PR
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分数阶高阶热型方程解的概率表示公式

Probabilistic representation formula for the solution of fractional high order heat-type equations

Stefano Bonaccorsi, Mirko D'Ovidio, Sonia Mazzucchi

摘要:

利用复平面上的随机游动序列,在适当的尺度下,给出了一维情形下一类分数阶高阶热型方程解的概率构造.由一类从属过程支配的时变允许处理空间中导数的分数部分。首先考虑具有任意阶空间分数阶导数的发展方程,然后将其推广到具有$α\in (0,1)$阶时间分数阶导数(Caputo导数)的发展方程.

英文摘要:

We propose a probabilistic construction for the solution of a general class of fractional high order heat-type equations in the one-dimensional case, by using a sequence of random walks in the complex plane with a suitable scaling. A time change governed by a class of subordinated processes allows to handle the fractional part of the derivative in space. We first consider evolution equations with space fractional derivatives of any order, and later we show the extension to equations with time fractional derivative (in the sense of Caputo derivative) of order $α\in (0,1)$.

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