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arXiv 1102.3995math.AP
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单位球上调和函数的最优估计

Optimal estimates for harmonic functions in the unit ball

David Kalaj, Marijan Markovic

摘要:

在不等式$$|u(x)|\leq \frac{C_p}{(1-|x|^2)^{(n-1)/p}}\|u\|_{h^p(B^n)}, u\in h^p(B^n), x\in B^n,$$中,我们找到了用高斯超几何和欧拉函数表示的尖锐常数$C_p$和尖锐函数$C_p=C_p(x)$.这推广和改进了Axler,Bourdon和Ramey(\cite{ABR})的一些结果,在那里他们得到了类似的结果,只是在$p=2$和$p=1$的情况下才是尖锐的.

英文摘要:

We find the sharp constants $C_p$ and the sharp functions $C_p=C_p(x)$ in the inequality $$|u(x)|\leq \frac{C_p}{(1-|x|^2)^{(n-1)/p}}\|u\|_{h^p(B^n)}, u\in h^p(B^n), x\in B^n,$$ in terms of Gauss hypergeometric and Euler functions. This extends and improves some results of Axler, Bourdon and Ramey (\cite{ABR}), where they obtained similar results which are sharp only in the cases $p=2$ and $p=1$.

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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