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arXiv 0910.0652math.AP
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Tricomi算子实特征值对应的特征函数的$L^2$估计

$L^2$ estimates for the eigenfunctions corresponding to real eigenvalues of the Tricomi operator

Alberto Favaron

摘要:

我们引入了正规Tricomi域$\Om_{\a,\b}$,$\a>0>\b$的一族${\cal F}$,并证明了它的元素相对于向量场$D=-3x\partial_x-2y\partial_y$是$D$ -星形的当且仅当$\a\ge1/2$ .假设对于某些$\a\ge1/2$,基础域$\Om$属于${\cal F}$,我们建立了Tricomi算子实特征值对应的特征函数的$L^2$估计.特别是,我们的研究结果突出了这些估计值的$\a$和$\b$和抛物线直径的$\Om$的依赖性。

英文摘要:

We introduce a family ${\cal F}$ of normal Tricomi domains $\Om_{\a,\b}$, $\a>0>\b$, and we show that its elements are $D$-star-shaped with respect to the vector field $D=-3x\partial_x-2y\partial_y$ if and only if $\a\ge1/2$. Provided that the underlying domain $\Om$ belongs to ${\cal F}$ for some $\a\ge1/2$, we then establish $L^2$ estimates for the eigenfunctions corresponding to real eigenvalues of the Tricomi operator. In particular, our result highlights a dependency of these estimates on the values of $\a$ and $\b$ and the parabolic diameter of $\Om$.

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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