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arXiv 1901.01487math.AP
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改进的变系数平方函数与傅里叶积分算子的局部光滑化

Improved variable coefficient square functions and local smoothing of Fourier integral operators

Chuanwei Gao, Changxing Miao, Jianwei-Urbain Yang

摘要:

对一类具有齐次相函数的振荡积分算子建立了一定的平方函数估计。这些结果被用来推导Mockenhaupt Seeger和Sogge \cite{MSS-jams}关于傅里叶积分算子的局部光滑性质的一个结果的一个改进,该结果是在研究紧致黎曼流形上的波动方程时自然产生的.该证明是陶和巴尔加斯\cite{Tao-Vargas-II},%以及加里戈斯和西格\cite{GaSe09}的双线性方法的适应,并基于李\cite{Lee-JFA}的双线性振荡积分估计。

英文摘要:

We establish certain square function estimates for a class of oscillatory integral operators with homogeneous phase functions. These results are employed to deduce a refinement of a previous result of Mockenhaupt Seeger and Sogge \cite{MSS-jams} on the local smoothing property for Fourier integral operators, which arise naturally in the study of wave equations on compact Riemannian manifolds. The proof is an adaptation of the bilinear approach of Tao and Vargas \cite{Tao-Vargas-II}, %as well as Garrigós and Seeger \cite{GaSe09}, and based on bilinear oscillatory integral estimates of Lee \cite{Lee-JFA}.

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