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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…

Classical Analysis and ODEs · Mathematics 2025-01-22 Marc Carnovale , Jonathan M. Fraser , Ana E. de Orellana

We prove new Pitt inequalities for the Fourier transforms with radial and non-radial weights using weighted restriction inequalities for the Fourier transform on the sphere. We also prove new Riemann-Lebesgue estimates and versions of the…

Functional Analysis · Mathematics 2015-09-04 Laura De Carli , Dmitriy Gorbachev , Sergey Tikhonov

We establish a sharp adjoint Fourier restriction inequality for the end-point Tomas-Stein restriction theorem on the circle under a certain arithmetic constraint on the support set of the Fourier coefficients of the given function. Such…

Classical Analysis and ODEs · Mathematics 2024-02-15 Valentina Ciccone , Felipe Gonçalves

This dissertation studies the Fourier restriction, which is to find the range of the constants p, q such that the L^q norm on a chosen subset of the Fourier domain is bounded above by the L^p norm in a spacial domain, up to some constant…

History and Overview · Mathematics 2025-12-16 Sicheng Zhang

We deal with the restriction phenomenon for the Fourier transform. We prove that each of the restriction conjectures for the sphere, the paraboloid, the elliptic hyperboloid in $\mathbb{R}^n$ implies that for the cone in $\mathbb{R}^{n+1}$.…

Classical Analysis and ODEs · Mathematics 2008-04-24 Fabio Nicola

In this paper, we present a refined version of the (classical) Stein inequality for the Fourier transform, elevating it to a new level of accuracy. Furthermore, we establish extended analogues of a more precise version of the Stein…

Functional Analysis · Mathematics 2024-11-19 Erlan D. Nursultanov , Durvudkhan Suragan

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.

Functional Analysis · Mathematics 2018-01-30 Leo R. Ya. Doktorski

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.

Classical Analysis and ODEs · Mathematics 2013-07-19 Daniel Oberlin , Richard Oberlin

We prove new Fourier restriction estimates to the unit sphere $S^{d-1}$ on the class of $O(d-k)\times O(k)$-symmetric functions, for every $d\geq 4$ and $2\leq k\leq d-2$. As an application, we establish the existence of maximizers for the…

Functional Analysis · Mathematics 2023-11-08 Rainer Mandel , Diogo Oliveira e Silva

This article explores weighted $(L^p, L^q)$ inequalities for the Fourier transform in rank one Riemannian symmetric spaces of noncompact type. We establish both necessary and sufficient conditions for these inequalities to hold. To prove…

Classical Analysis and ODEs · Mathematics 2024-06-11 Pratyoosh Kumar , Sanjoy Pusti , Tapendu Rana , Mandeep Singh

In this paper, we initiate the study of the Fourier restriction phenomena on quantum Euclidean spaces, and establish the analogues of the Tomas-Stein restriction theorem and the two-dimensional full restriction theorem.

Functional Analysis · Mathematics 2022-09-07 Guixiang Hong , Xudong Lai , Liang Wang

The Fourier restriction problem asks when it is meaningful to restrict the Fourier transform of a function to a given set. Many of the key examples are smooth co-dimension 1 manifolds, although there is increasing interest in fractal sets.…

Probability · Mathematics 2026-01-12 Jonathan M. Fraser , Ana E. de Orellana

We prove a Fourier restriction result, uniform over a certain collection of reference measures, for some indices in the Stein-Tomas range.

Classical Analysis and ODEs · Mathematics 2010-10-05 Daniel M. Oberlin

We present a restriction theorem for the Fourier transform to a 2-dimensional conical surface of finite type, obtaining a sharp result, which improves previous work by Barcelo.

Classical Analysis and ODEs · Mathematics 2019-08-14 Stefan Buschenhenke

The classical Stein--Tomas theorem extends the theory of linear Fourier restriction estimates from smooth manifolds to fractal measures exhibiting Fourier decay. In the multilinear setting, transversality allows for Fourier extension…

Classical Analysis and ODEs · Mathematics 2026-02-11 Itamar Oliveira , Ana E. de Orellana

The adjoint Fourier restriction inequality of Tomas and Stein states that the mapping $f\mapsto \widehat{f\sigma}$ is bounded from $\lt(S^2)$ to $L^4(\reals^3)$. We prove that there exist functions which extremize this inequality, and that…

Classical Analysis and ODEs · Mathematics 2010-06-23 Michael Christ , Shuanglin Shao

In this article, we study the problem of obtaining Lebesgue space inequalities for the Fourier restriction operator associated to rectangular pieces of the paraboloid and perturbations thereof. We state a conjecture for the dependence of…

Classical Analysis and ODEs · Mathematics 2019-11-27 Jeremy Schwend , Betsy Stovall

Mockenhaupt and Tao (Duke 2004) proved a finite field analogue of the Stein--Tomas restriction theorem, establishing a range of $q$ for which $L^q\to L^2$ restriction estimates hold for a given measure $\mu$ on a vector space over a finite…

Combinatorics · Mathematics 2025-05-15 Jonathan M. Fraser , Firdavs Rakhmonov

In this article, we define the Fourier-Dunkl transform, which generalizes the Fourier transform. We prove Strichartz's restriction theorem for the Fourier-Dunkl transform for a cone-hyper-surface and its generalisation to the family of…

Classical Analysis and ODEs · Mathematics 2022-12-08 P Jitendra Kumar Senapati , Pradeep Boggarapu , Shyam Swarup Mondal , Hatem Mejjaoli

We prove a maximal Fourier restriction theorem for the sphere $\mathbb{S}^{d-1}$ in $\mathbb{R}^{d}$ for any dimension $d\geq 3$ in a restricted range of exponents given by the Stein-Tomas theorem. The proof consists of a simple…

Classical Analysis and ODEs · Mathematics 2017-03-29 Marco Vitturi
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