arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.09364math.AP
收藏

分数阶扩散的时间倒向问题- wave equation

Backward problems in time for fractional diffusion-wave equation

Giuseppe Floridia, Masahiro Yamamoto

摘要:

本文考虑时间分数阶扩散波方程$\pppa u(x,t) = -Au(x,t)$,具有分数阶$α\in (1,2)$的$0<t<T$的时间向后问题:由$u(\cdot,T)$和$\ppp_tu(\cdot,T)$确定$u(\cdot,t)$,$0<t<T$.证明了存在可数无限集$Λ\in (0,\infty)$,它具有唯一的聚点$0$,使得后向问题对于$T \not\in Λ$是适定的.

英文摘要:

In this article, for a time-fractional diffusion-wave equation $\pppa u(x,t) = -Au(x,t)$, $0<t<T$ with fractional order $α\in (1,2)$, we consider the backward problem in time: determine $u(\cdot,t)$, $0<t<T$ by $u(\cdot,T)$ and $\ppp_tu(\cdot,T)$. We proved that there exists a countably infinite set $Λ\in (0,\infty)$ with a unique accumulation point $0$ such that the backward problem is well-posed for $T \not\in Λ$.

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。

↑