Uniform Fourier restriction for convex curves
Abstract
We extend the estimates for maximal Fourier restriction operators proved by M\"{u}ller, Ricci, and Wright in \cite{MR3960255} and Ramos in \cite{MR4055940} to the case of arbitrary convex curves in the plane, with constants uniform in the curve. The improvement over M\"{u}ller, Ricci, and Wright and Ramos is given by the removal of the regularity condition on the curve. This requires the choice of an appropriate measure for each curve, that is suggested by an affine invariant construction of Oberlin in \cite{MR1960918}. As corollaries, we obtain a uniform Fourier restriction theorem for arbitrary convex curves, and a result on the Lebesgue points of the Fourier transform on the curve.
Keywords
Cite
@article{arxiv.2111.06874,
title = {Uniform Fourier restriction for convex curves},
author = {Marco Fraccaroli},
journal= {arXiv preprint arXiv:2111.06874},
year = {2024}
}
Comments
v2: 29 pages, 6 figures. Additional references, clarifying comment in proof of Lemma 4.2 Case II, and lemmata A.17--19 and figure 6 to improve exposition of proof of Thm 2.5 in Appendix. No changes to results or proofs