Lower bounds for the dyadic Hilbert transform
Lower bounds for the dyadic Hilbert transform
复制标题
二进希尔伯特变换的下界
DOI:
--
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
B. Wick
中科院分区:
文献类型:
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作者:
Philippe Jaming;Elodie Pozzi;B. Wick
In this paper, we seek lower bounds of the dyadic Hilbert transform (Haar shift) of the form $leftVert S f
ightVert_{L^2(K)}geq C(I,K)leftVert f
ightVert_{L^2(I)}$ where $I$ and $K$ are two dyadic intervals and $f$ supported in $I$. If $Isubset K$ such bound exist while in the other cases $Ksubsetneq I$ and $Kcap I=emptyset$ such bounds are only available under additional constraints on the derivative of $f$. In the later case, we establish a bound of the form $leftVert S f
ightVert_{L^2(K)}geq C(I,K)|leftlangle f
ight
angle_I|$ where $leftlangle f
ight
angle_I$ is the mean of $f$ over $I$. This sheds new light on the similar problem for the usual Hilbert transform that we exploit.
影响因子:
3.5
作者:
Zeng GL;Gullberg GT
通讯作者:
Gullberg GT