arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.12342math.PR
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Barenblatt型解的另一种概率表示

Alternative probabilistic representations of Barenblatt-type solutions

Alessandro De Gregorio, Roberto Garra

摘要:

一般类的概率密度函数\[u(x,t)=Ct^{-αd}\left (1-\left (\frac{\|x\|}{ct^α}\right )^β\right )_+^γ,\quad x\in \mathbb{R}^d,t>0,\]被认为是,包含作为特殊情况下的Barenblatt解决方案所产生的,例如,在研究非线性热方程。替代概率表示的Barenblatt型解决方案$u(x,t)$提出。在一维情况下,通过这种方法,$u(x,t)$可以与波的传播。

英文摘要:

A general class of probability density functions \[u(x,t)=Ct^{-αd}\left (1-\left (\frac{\|x\|}{ct^α}\right )^β\right )_+^γ,\quad x\in \mathbb{R}^d,t>0,\] is considered, containing as particular case the Barenblatt solutions arising, for instance, in the study of nonlinear heat equations. Alternative probabilistic representations of the Barenblatt-type solutions $u(x,t)$ are proposed. In the one-dimensional case, by means of this approach, $u(x,t)$ can be connected with the wave propagation.

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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