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Related papers: A bilinear proof of decoupling for the cubic momen…

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We give a short and elementary proof of the $\ell^{2}$ decoupling inequality for the moment curve in $\mathbb{R}^k$, using a bilinear approach inspired by the nested efficient congruencing argument of Wooley (arXiv:1708.01220).

Number Theory · Mathematics 2023-09-12 Shaoming Guo , Zane Kun Li , Po-Lam Yung , Pavel Zorin-Kranich

We prove sharp $\ell^2$-decoupling inequalities for non-degenerate complex curves via the bilinear argument due to Guo--Li--Yung--Zorin-Kranich, which in turn is inspired by the efficient congruencing argument of Wooley. Secondly,…

Classical Analysis and ODEs · Mathematics 2026-03-03 Robert Schippa

We obtain sharp small cap decoupling inequalities associated to the moment curve for certain range of exponents $p$. Our method is based on the bilinearization argument due to Bourgain and Bourgain-Demeter. Our result generalizes theirs to…

Classical Analysis and ODEs · Mathematics 2021-05-04 Changkeun Oh

We prove a sharp $l^{10}(L^{10})$ decoupling for the moment curve in $\mathbb{R}^3$. The proof involves a two-step decoupling combined with new incidence estimates for planks, tubes and plates.

Classical Analysis and ODEs · Mathematics 2020-11-23 Hongki Jung

We prove sharp small cap decoupling estimates for the moment curve in $\mathbb{R}^3$. Our formulation of the small caps is motivated by a conjecture about $L^p$ estimates for exponential sums from the small cap decoupling paper of Demeter,…

Classical Analysis and ODEs · Mathematics 2024-11-27 Larry Guth , Dominique Maldague

This paper proves sharp small cap decoupling estimates for the moment curve $\mathcal{M}^n=\{(t,t^2,\ldots,t^n):0\leq t\leq 1\}$ in the remaining small cap parameter ranges for $\mathbb{R}^2$ and $\mathbb{R}^3$.

Classical Analysis and ODEs · Mathematics 2024-11-28 Dominique Maldague , Changkeun Oh

For each $d\geq 0$, we prove decoupling inequalities in $\mathbb R^3$ for the graphs of all bivariate polynomials of degree at most $d$ with bounded coefficients, with the decoupling constant depending uniformly in $d$ but not the…

Classical Analysis and ODEs · Mathematics 2024-11-01 Jianhui Li , Tongou Yang

We prove sharp decoupling inequalities for all degenerate surfaces of codimension two in $\mathbb{R}^5$ given by two quadratic forms in three variables. Together with previous work by Demeter, Guo, and Shi in the non-degenerate case…

Classical Analysis and ODEs · Mathematics 2023-07-25 Shaoming Guo , Changkeun Oh , Joris Roos , Po-Lam Yung , Pavel Zorin-Kranich

We use high-low frequency methods developed in the context of decoupling to prove sharp (up to $C_\epsilon R^\epsilon$) square function estimates for the moment curve $(t,t^2,\ldots,t^n)$ in $\mathbb{R}^n$. Our inductive scheme incorporates…

Classical Analysis and ODEs · Mathematics 2023-09-26 Larry Guth , Dominique Maldague

We give a new proof of $l^2$ decoupling for the parabola inspired from efficient congruencing. Making quantitative this proof matches a bound obtained by Bourgain for the discrete restriction problem for the parabola. We illustrate…

Classical Analysis and ODEs · Mathematics 2020-08-26 Zane Kun Li

We prove two types of results. First we develop the decoupling theory for hypersurfaces with nonzero Gaussian curvature, which extends our earlier work from \cite{BD3}. As a consequence of this we obtain sharp (up to $\epsilon$ losses)…

Classical Analysis and ODEs · Mathematics 2015-09-04 Jean Bourgain , Ciprian Demeter

We prove a sharp decoupling for a class of three dimensional manifolds in $\mathbb{R}^5$.

Classical Analysis and ODEs · Mathematics 2019-02-05 Ciprian Demeter , Shaoming Guo , Fangye Shi

We use the high-low method and wavepacket pruning to prove new small-cap decoupling estimates for the moment curve in $\mathbb{R}^4$. As an application, we verify a conjecture of Demeter regarding the $L^{12}$ square-root cancellation of…

Classical Analysis and ODEs · Mathematics 2026-05-27 Jacob Glidewell

We develop a toolbox for proving decouplings into boxes with diameter smaller than the canonical scale. As an application of this new technique, we solve three problems for which earlier methods have failed. We start by verifying the small…

Classical Analysis and ODEs · Mathematics 2020-07-09 Ciprian Demeter , Larry Guth , Hong Wang

We prove decoupling inequalities for mixed-homogeneous bivariate polynomials, which partially answers a conjecture of Bourgain, Demeter and Kemp.

Classical Analysis and ODEs · Mathematics 2021-10-05 Jianhui Li , Tongou Yang

We prove sharp $\ell^q L^p$ decoupling inequalities for $p,q \in [2,\infty)$ and arbitrary tuples of quadratic forms. Connections to prior results on decoupling inequalities for quadratic forms are also explained. We also include some…

Classical Analysis and ODEs · Mathematics 2023-03-22 Shaoming Guo , Changkeun Oh , Ruixiang Zhang , Pavel Zorin-Kranich

We run an iteration argument due to Pramanik and Seeger, to provide a proof of sharp decoupling inequalities for conical surfaces and for $k$-cones. These are extensions of results \L aba and Pramanik to sharp exponents.

Classical Analysis and ODEs · Mathematics 2020-02-19 Shaoming Guo , Changkeun Oh

We prove sharp $\ell^{p}L^{p}$ decoupling inequalities for $2$ quadratic forms in $4$ variables. We also recover several previous results (arXiv:1409.1634, arXiv:1501.07224, arXiv:1609.02022, arXiv:1609.04107) in a unified way.

Classical Analysis and ODEs · Mathematics 2022-01-04 Shaoming Guo , Pavel Zorin-Kranich

In this article we study the bivariate truncated moment problem (TMP) of degree $2k$ on reducible cubic curves. First we show that every such TMP is equivalent after applying an affine linear transformation to one of 8 canonical forms of…

Functional Analysis · Mathematics 2024-03-05 Seonguk Yoo , Aljaž Zalar

We prove an $l^p$ decoupling inequality for hypersurfaces with nonzero Gaussian curvature and use it to derive a corresponding $l^p$ decoupling for curves not contained in a hyperplane. This extends our earlier work from [2]

Classical Analysis and ODEs · Mathematics 2014-07-02 Jean Bourgain , Ciprian Demeter
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