三线性光滑不等式与三角希尔伯特变换的一个变形
Trilinear smoothing inequalities and a variant of the triangular Hilbert transform
摘要:
本文证明了一个含曲率的三角希尔伯特变换的变形的Lebesgue空间不等式。分析依赖于一个重要的三线性平滑不等式,并对各向异性变形的扭曲paraproduct的界限。三线性平滑不等式也导致相应的极大函数的勒贝格空间界和一个定量的非线性罗斯型定理有关的模式在欧几里德平面。
英文摘要:
Lebesgue space inequalities are proved for a variant of the triangular Hilbert transform involving curvature. The analysis relies on a crucial trilinear smoothing inequality developed herein, and on bounds for an anisotropic variant of the twisted paraproduct. The trilinear smoothing inequality also leads to Lebesgue space bounds for a corresponding maximal function and a quantitative nonlinear Roth-type theorem concerning patterns in the Euclidean plane.
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