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arXiv 1503.04121math.CV
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Bergman投影及其导数的积分平均的界

Bounds on Integral Means of Bergman Projections and their Derivatives

Timothy Ferguson

摘要:

我们用原函数的积分平均来定义函数的Bergman投影的积分平均。作为这些结果的一个应用,我们用原函数在$θ$方向上的某些导数的加权$L^p$范数来约束Bergman投影的导数的某些加权Bergman空间范数.这些结果很容易地暗示了著名的结果:对于$1 < p < \infty$,Bergman投影是从索伯列夫空间$W^{k,p}$到其自身有界的.我们也应用我们的结果,得到某些正则性的结果涉及极值问题的Bergman空间。最后,我们构造了一个函数,该函数在单位圆盘的边界处一致地逼近$0$,但其Bergman投影不在$H^2$中。

英文摘要:

We bound integral means of the Bergman projection of a function in terms of integral means of the original function. As an application of these results, we bound certain weighted Bergman space norms of derivatives of Bergman projections in terms of weighted $L^p$ norms of certain derivatives of the original function in the $θ$ direction. These results easily imply the well known result that the Bergman projection is bounded from the Sobolev space $W^{k,p}$ into itself for $1 < p < \infty$. We also apply our results to derive certain regularity results involving extremal problems in Bergman spaces. Lastly, we construct a function that approaches $0$ uniformly at the boundary of the unit disc but whose Bergman projection is not in $H^2$.

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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