Two-sided norm estimates for Bergman-type projections with an asymptotically sharp lower bound

Two-sided norm estimates for Bergman-type projections with an asymptotically sharp lower bound
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具有渐进尖锐下界的伯格曼型投影的两侧范数估计

DOI:
10.4171/rmi/1031
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发表时间:
2017-01
期刊:
Revista Matemática Iberoamericana
影响因子:
--
通讯作者:
Lifang Zhou
Lifang Zhou
中科院分区:
其他
文献类型:
--
作者:
Congwen Liu;Antti Perälä;Lifang Zhou

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我们获得了由标准权重 $(1-|z|^2)^{\alpha}$ 产生的伯格曼型投影族的新两侧范数估计,其中 $\alpha>-1$。当 $\alpha\ 到 -1$ 时,下界是尖锐的,因为它渐近地符合 Riesz 投影的范数。上限是根据最大伯格曼投影估计的,我们计算其精确的算子范数。结果为第一作者最近提出的猜想提供了证据。
We obtain new two-sided norm estimates for the family of Bergman-type projections arising from the standard weights $(1-|z|^2)^{\alpha}$ where $\alpha>-1$. As $\alpha\to -1$, the lower bound is sharp in the sense that it asymptotically agrees with the norm of the Riesz projection. The upper bound is estimated in terms of the maximal Bergman projection, whose exact operator norm we calculate. The results provide evidence towards a conjecture that was posed very recently by the first author.
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