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We prove bilinear $\ell^2$-decoupling and refined bilinear decoupling inequalities for the truncated hyperbolic paraboloid in $\mathbb{R}^3$. As an application, we prove the associated restriction estimate in the range $p>22/7$, matching an…

Classical Analysis and ODEs · Mathematics 2026-04-16 Ciprian Demeter , Shukun Wu

For cylindrically symmetric functions dyadically supported on the paraboloid, we obtain a family of sharp linear and bilinear adjoint restriction estimates. As corollaries, we first extend the ranges of exponents for the classical…

Classical Analysis and ODEs · Mathematics 2008-06-01 Shuanglin Shao

We improve the Bennett--Carbery--Tao trilinear restriction estimate for subsets of the paraboloid in three dimensions, giving the sharp factor depending on the transversality.

Classical Analysis and ODEs · Mathematics 2016-02-05 Javier Ramos

In connection with the restriction problem in $\mathbb R^n$ for hypersurfaces including the sphere and paraboloid, the bilinear (adjoint) restriction estimates have been extensively studied. However, not much is known about such estimates…

Classical Analysis and ODEs · Mathematics 2017-10-23 Jong-Guk Bak , Jungjin Lee , Sanghyuk Lee

We prove a class of modified paraboloid restriction estimates with a loss of angular derivatives for the full set of paraboloid restriction conjecture indices. This result generalizes the paraboloid restriction estimate in radial case from…

Analysis of PDEs · Mathematics 2019-06-12 Changxing Miao , Junyong Zhang , Jiqiang Zheng

We provide $L^p \to L^q$ refinements on some Fourier restriction estimates obtained using polynomial partitioning. Let $S\subset \mathbb{R}^3$ be a compact $C^\infty$ surface with strictly positive second fundamental form. We derive sharp…

Classical Analysis and ODEs · Mathematics 2017-02-10 Jongchon Kim

Recently Wolff obtained a sharp $L^2$ bilinear restriction theorem for bounded subsets of the cone in general dimension. Here we adapt the argument of Wolff to also handle subsets of ``elliptic surfaces'' such as paraboloids and spheres.…

Classical Analysis and ODEs · Mathematics 2007-05-23 Terence Tao

In this paper, we prove restriction estimates for hyperbolic paraboloids in dimensions $n>=5$ by the polynomial partitioning method.

Analysis of PDEs · Mathematics 2024-08-29 Zhuoran Li

We prove an $L^2\times L^2\to L^q_tL^r_x$ bilinear adjoint Fourier restriction estimate for $n$-dimensional elliptic paraboloids, with $n\ge 2$ and $1\le q \le \infty$, $1\le r\le 2$ being on the endline…

Analysis of PDEs · Mathematics 2022-05-24 Jianwei Urbain Yang

In Fourier restriction problems, a cone and a paraboloid are model surfaces. The sharp bilinear cone restriction estimate was first shown by Wolff, and later the endpoint was obtained by Tao. For a paraboloid, the sharp $L^2$ bilinear…

Classical Analysis and ODEs · Mathematics 2021-12-23 Jungjin Lee

We prove global Fourier restriction estimates for elliptic, or two-sheeted, hyperboloids of arbitrary dimension $d \geq 2$, extending recent joint work with Oliveira e Silva and Stovall. Our results are unconditional in the (adjoint)…

Classical Analysis and ODEs · Mathematics 2020-08-04 Benjamin Bruce

In this article we establish new inequalities, both conditional and unconditional, for the restriction problem associated to the hyperbolic, or one-sheeted, hyperboloid in three dimensions, endowed with a Lorentz-invariant measure. These…

Classical Analysis and ODEs · Mathematics 2020-07-15 Benjamin Bruce , Diogo Oliveira e Silva , Betsy Stovall

We prove certain endpoint restriction estimates for the paraboloid over finite fields in three and higher dimensions. Working in the bilinear setting, we are able to pass from estimates for characteristic functions to estimates for general…

Classical Analysis and ODEs · Mathematics 2011-10-11 Allison Lewko , Mark Lewko

We improve the $L^{p}\rightarrow L^p$ restriction estimate in $\mathbb{R}^3$ to the range $p>3+3/14$, based on some Kakeya type incidence estimates and the refined decoupling theorem.

Classical Analysis and ODEs · Mathematics 2022-10-17 Hong Wang , Shukun Wu

Bilinear restriction estimates have been appeared in work of Bourgain, Klainerman, and Machedon. In this paper we develop the theory of these estimates (together with the analogues for Kakeya estimates). As a consequence we improve the…

Classical Analysis and ODEs · Mathematics 2007-05-23 Terence Tao , Ana Vargas , Luis Vega

In contrast to elliptic surfaces, the Fourier restriction problem for hypersurfaces of non-vanishing Gaussian curvature which admit principal curvatures of opposite signs is still hardly understood. In fact, even for 2-surfaces, the only…

Classical Analysis and ODEs · Mathematics 2019-07-04 Stefan Buschenhenke , Detlef Müller , Ana Vargas

The purpose of this paper is to prove an essentially sharp L^2 Fourier restriction estimate for light cones, of the type which is called bilinear in the recent literature.

Classical Analysis and ODEs · Mathematics 2007-05-23 Thomas Wolff

We prove $l^p$-improving estimates for the averaging operator along the discrete paraboloid in the sharp range of $p$ in all dimensions $n\ge 2$.

Classical Analysis and ODEs · Mathematics 2020-02-28 Shival Dasu , Ciprian Demeter , Bartosz Langowski

In this article, we prove a bilinear estimate for Schr\"odinger equations on 2d waveguide, $\mathbb{R}\times \mathbb{T}$. We hope it may be of use in the further study of concentration compactness for cubic NLS on $\mathbb{R}\times…

Analysis of PDEs · Mathematics 2023-12-01 Yangkendi Deng

In this short note, we prove that the restriction conjecture for the (hyperbolic) paraboloid in $\mathbb{R}^d$ implies the $l^p$-decoupling theorem for the (hyperbolic) paraboloid in $\mathbb{R}^{2d-1}$. In particular, this gives a simple…

Classical Analysis and ODEs · Mathematics 2025-10-08 Changkeun Oh
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