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arXiv 1105.3283math.AP
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柯西过程基态本征函数的几何性质

Geometric property of the Ground State Eigenfunction for Cauchy Process

Sunghoon Kim, Ki-Ahm Lee

摘要:

本文研究了非线性非局部流$u_t+(-\La)^{1/2}u=0$的渐近行为,得到了在严格凸区域$Ω\subset\R^n$中的非线性特征值问题:(- \La)^{1/2} \vp =λ \vp的解的几何性质,其中$\vp>0$在$Ω$中,$\vp=0$在$\R^n\bsΩ$中.这对应于柯西过程的特征值问题。$\vp$的维数为$n=1$。本文证明了$\vp^{-\frac{2}{n+1}}$是凸的。此外,还证明了抛物流的最终幂凸性。最后,我们将几何结果推广到分数阶Heat算子的Cauchy问题。

英文摘要:

We consider the asymptotic behavior of nonlinear nonlocal flows $u_t+(-\La)^{1/2}u=0$ to find the geometric property of the solutions in nonlinear eigenvalue problem: (-\La)^{1/2}\vp=λ\vp posed in a strictly convex domain $Ω\subset\R^n$ with $\vp>0$ in $Ω$ and $\vp=0$ on $\R^n\bsΩ$. This is corresponding to an eigenvalue problem for Cauchy process. The concavity of $\vp$ is well known for the dimension $n=1$. In this paper, we will show $\vp^{-\frac{2}{n+1}}$ is convex. Moreover, the eventual power-convexity of the parabolic flows is also proved. In the final section, We extend geometric results to Cauchy problem for the fractional Heat operator.

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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