We prove L2 -> Lp estimates on the torus for maximal polynomial modulations of Calderon-Zygmund operators with anisotropic scaling. We obtain improved constants in these estimates. As a corollary, maximal polynomial modulations of a mollified version of the Hilbert transform along the parabola are bounded with only logarithmic dependence of the estimate on the Lipschitz constant of the mollifier. (c) 2023 Elsevier Inc. All rights reserved.
机构:
Univ Illinois, Dept Math Stat & Comp Sci, 322 Sci & Engn Off,851 S Morgan St, Chicago, IL 60607 USAUniv Illinois, Dept Math Stat & Comp Sci, 322 Sci & Engn Off,851 S Morgan St, Chicago, IL 60607 USA