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We use a restriction theorem for Fourier transforms of fractal measures to study projections onto families of planes in R^3 whose normal directions form nondegenerate curves.

经典分析与常微分方程 · 数学 2013-07-19 Daniel Oberlin , Richard Oberlin

Consider the Fourier restriction operator associated to a curve in $R^d$, $d\ge 3$. We prove for various classes of curves the endpoint restricted strong type estimate with respect to affine arclength measure on the curve. An essential…

经典分析与常微分方程 · 数学 2016-04-20 Jong-Guk Bak , Daniel M. Oberlin , Andreas Seeger

We consider Fourier transforms of densities supported on curves in R^d. We obtain sharp lower and close to sharp upper bounds for the L^q decay rates.

经典分析与常微分方程 · 数学 2010-03-15 Luca Brandolini , Giacomo Gigante , Allan Greenleaf , Alexander Iosevich , Andreas Seeger , Giancarlo Travaglini

We establish variational estimates related to the problem of restricting the Fourier transform of a three-dimensional function to the two-dimensional Euclidean sphere. At the same time, we give a short survey of the recent field of maximal…

经典分析与常微分方程 · 数学 2021-09-16 Vjekoslav Kovač , Diogo Oliveira e Silva

For spherical and parabolic averages of the Fourier transform of fractal measures, we obtain new upper bounds on rates of decay by an "intermediate dimension" trick.

经典分析与常微分方程 · 数学 2020-07-08 Xiumin Du

We prove a uniform Fourier extension-restriction estimate for a certain class of curves in d-dimensional Euclidean space.

经典分析与常微分方程 · 数学 2008-11-11 Daniel M. Oberlin

We introduce a continuous analog of the Fourier ratio for compactly supported Borel measures. For a measure \(\mu\) on \(\mathbb{R}^d\) and \(f\in L^2(\mu)\), the Fourier ratio compares \(L^1\) and \(L^2\) norms of a regularized Fourier…

经典分析与常微分方程 · 数学 2025-12-19 A. Iosevich , Z. Li , E. Palsson , A. Yavicoli

We prove a Fourier restriction estimate under the assumption that certain convolution power of the measure admits an $r$-integrable density.

经典分析与常微分方程 · 数学 2014-04-15 Xianghong Chen

We consider the convolution operator for a measure supported on complex curves. The measure which we consider here is an analogue of the affine arclength measure for real curves. By modifying a combinatorial argument called the band…

经典分析与常微分方程 · 数学 2015-03-31 Hyunuk Chung , Seheon Ham

We prove sharp endpoint results for the Fourier restriction operator associated to nondegenerate curves in $\Bbb R^d$, $d\ge 3$, and related estimates for oscillatory integral operators. Moreover, for some larger classes of curves in $\Bbb…

经典分析与常微分方程 · 数学 2010-03-15 Jong-Guk Bak , Daniel M. Oberlin , Andreas Seeger

Given a Fourier transformable measure in two dimensions, we find a formula for the intensity of its Fourier transform along circles. In particular, we obtain a formula for the diffraction measure along a circle in terms of the…

经典分析与常微分方程 · 数学 2024-05-15 Emily R. Korfanty , Nicolae Strungaru

Limiting real interpolation method is applied to describe the behaviour of the Fourier coefficients of functions that belong to spaces which are "very close" to L2.

泛函分析 · 数学 2018-01-30 Leo R. Ya. Doktorski

We prove Fourier restriction estimates to arbitrary compact $C^{N}$ curves for any $N > d$ in the (sharp) Drury range, using a power of the affine arclength measure as a mitigating factor. In particular, we make no nondegeneracy assumption…

经典分析与常微分方程 · 数学 2022-04-22 Michael Jesurum

We prove uniform $L^p \to L^q$ bounds for Fourier restriction to polynomial curves in $\mathbb R^d$ with affine arclength measure, in the conjectured range.

经典分析与常微分方程 · 数学 2017-10-24 Betsy Stovall

The purpose of this paper is to prove a Fourier restriction estimate for certain 2-dimensional surfaces in $\bbR^{2d}$, $d\ge 3$. These surfaces are defined by a complex curve $\gamma(z)$ of simple type, which is given by a mapping of the…

经典分析与常微分方程 · 数学 2013-04-01 Jong-Guk Bak , Seheon Ham

We consider the Fourier restriction operators associated to certain degenerate curves in R^d for which the highest torsion vanishes. We prove estimates with respect to affine arclength and with respect to the Euclidean arclength measure on…

经典分析与常微分方程 · 数学 2010-03-15 Jong-Guk Bak , Daniel M. Oberlin , Andreas Seeger

We prove some weighted Fourier restriction estimates using polynomial partitioning and refined Strichartz estimates. As application we obtain improved spherical average decay rates of the Fourier transform of fractal measures, and therefore…

经典分析与常微分方程 · 数学 2018-03-01 Xiumin Du , Larry Guth , Yumeng Ou , Hong Wang , Bobby Wilson , Ruixiang Zhang

The Stein--Tomas restriction theorem is an important result in Fourier restriction theory. It gives a range of $q$ for which $L^q\to L^2$ restriction estimates hold for a given measure, in terms of the Fourier and Frostman dimensions of the…

经典分析与常微分方程 · 数学 2025-01-22 Marc Carnovale , Jonathan M. Fraser , Ana E. de Orellana

We prove sharp estimates for incidences involving planar tubes that satisfy packing conditions. We apply them to improve the estimates for the Fourier transform of fractal measures supported on planar curves.

经典分析与常微分方程 · 数学 2025-02-24 Ciprian Demeter , Hong Wang

We bound certain r-maximal restriction operators on the moment curve.

经典分析与常微分方程 · 数学 2021-10-25 Michael Jesurum
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