Eigenvalue asymptotics for the Schr��dinger operator with a $��$-interaction on a punctured surface

Given $n\geq 2$, we put $r=\min\{i\in\mathbb{N}; i>n/2 \}$. Let $��$ be acompact, $C^{r}$-smooth surface in $\mathbb{R}^{n}$ which contains the origin. Let further $\{S_��\}_{0\le��
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