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arXiv math/0607311math.AP
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与径向记忆核有关的抛物型积分微分辨识问题I

Parabolic integrodifferential identification problems related to radial memory kernels I

A. Favaron, A. Lorenzi

摘要:

本文研究抛物型积分微分方程$$D_{t}u(t,x)={\cal A}u(t,x)+\int_0^t k(t-s,|x|){\cal B}u(s,x)ds +\int_0^t D_{|x|}k(t-s,|x|){\cal C}u(s,x)ds+f(t,x),$$(${\cal A}$是散度型的二阶一致椭圆线性算子)的径向核$k$的恢复问题.我们挑出一类特殊的运营商${\cal A}$和两件合适的附加信息,识别$k$的问题可以唯一地解决当地的时间时,所考虑的域是一个球形的冠或环。

英文摘要:

We are concerned with the problem of recovering the radial kernel $k$, depending also on time, in a parabolic integro-differential equation $$D_{t}u(t,x)={\cal A}u(t,x)+\int_0^t k(t-s,|x|){\cal B}u(s,x)ds +\int_0^t D_{|x|}k(t-s,|x|){\cal C}u(s,x)ds+f(t,x),$$ ${\cal A}$ being a uniformly elliptic second-order linear operator in divergence form. We single out a special class of operators ${\cal A}$ and two pieces of suitable additional information for which the problem of identifying $k$ can be uniquely solved locally in time when the domain under consideration is a spherical corona or an annulus.

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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