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Related papers: The proof of the $l^2$ Decoupling Conjecture

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Let $G$ be a real reductive Lie group, $L$ a compact subgroup, and $\pi$ an irreducible admissible representation of $G$. In this article we prove a necessary and sufficient condition for the finiteness of the multiplicities of $L$-types…

Representation Theory · Mathematics 2023-04-25 Toshiyuki Kobayashi

We proved a truncated second main theorem of level one with explicit exceptional sets for analytic maps into $\mathbb P^2$ intersecting the coordinate lines with sufficiently high multiplicities. As applications, we studied some cases of…

Complex Variables · Mathematics 2023-06-23 Ji Guo , Julie Tzu-Yueh Wang

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 prove that some renowned lower bounds in discrepancy theory admit a discrete analogue. Namely, we prove that the lower bound of the discrepancy for corners in the unit cube due to Roth holds true also for a suitable finite…

Classical Analysis and ODEs · Mathematics 2025-03-06 Luca Brandolini , Bianca Gariboldi , Giacomo Gigante , Alessandro Monguzzi

The universality of the continuum limit and the applicability of renormalized perturbation theory are tested in the SU(2) lattice gauge theory by computing two different non-perturbatively defined running couplings over a large range of…

High Energy Physics - Lattice · Physics 2009-10-22 G. de Divitiis , R. Frezzotti , M. Guagnelli , M. Luescher , R. Petronzio , R. Sommer , P. Weisz , U. Wolff

After Chern's conjecture on the discreteness of the constant scalar curvatures of compact minimal submanifolds $M^n$ in unit spheres $\mathbb{S}^{n+q}$, Z. Q. Lu proposed a conjecture regarding the second gap, based on his ingenious…

Differential Geometry · Mathematics 2026-01-13 Weiran Ding , Jianquan Ge , Fagui Li , Xize Yang

In this paper, we solve completely the $L^2\to L^r$ extension conjecture for the zero radius sphere over finite fields. We also obtain the sharp $L^p\to L^4$ extension estimate for non-zero radii spheres over finite fields, which improves…

Classical Analysis and ODEs · Mathematics 2023-06-22 Alex Iosevich , Doowon Koh , Sujin Lee , Thang Pham , Chun-Yen Shen

The 2-Decomposition Conjecture, equivalent to the 3-Decomposition Conjecture stated in 2011 by Hoffmann-Ostenhof, claims that every connected graph $G$ with vertices of degree 2 and 3, for which $G \setminus E(C)$ is disconnected for every…

Combinatorics · Mathematics 2023-09-19 F. Botler , A. Jiménez , M. Sambinelli , Y. Wakabayashi

Differential calculus on discrete sets is developed in the spirit of noncommutative geometry. Any differential algebra on a discrete set can be regarded as a `reduction' of the `universal differential algebra' and this allows a systematic…

High Energy Physics - Theory · Physics 2009-10-28 A. Dimakis , F. Müller-Hoissen

We propose to study the restriction conjecture using decoupling theorems and two-ends Furstenberg inequalities. Specifically, we pose a two-ends Furstenberg conjecture, which implies the restriction conjecture. As evidence, we prove this…

Classical Analysis and ODEs · Mathematics 2024-12-20 Hong Wang , Shukun Wu

We expand the class of curves $(\varphi_1(t),\varphi_2(t)),\ t\in[0,1]$ for which the $\ell^2$ decoupling conjecture holds for $2\leq p\leq 6$. Our class of curves includes all real-analytic regular curves with isolated points of vanishing…

Classical Analysis and ODEs · Mathematics 2019-06-11 Chandan Biswas , Maxim Gilula , Linhan Li , Jeremy Schwend , Yakun Xi

We show, using a Knapp-type homogeneity argument, that the $(L^p, L^2)$ restriction theorem implies a growth condition on the hypersurface in question. We further use this result to show that the optimal $(L^p, L^2)$ restriction theorem…

Classical Analysis and ODEs · Mathematics 2007-05-23 Alex Iosevich

It is known that Szpiro's conjecture, or equivalently the ABC-conjecture, implies Lang's conjecture giving a uniform lower bound for the canonical height of nontorsion points on elliptic curves. In this note we show that a significantly…

Number Theory · Mathematics 2011-05-30 Joseph H. Silverman

The Decomposition Problem in the class $LIP(\mathbb{S}^2)$ is to decompose any bi-Lipschitz map $f:\mathbb{S}^2 \to \mathbb{S}^2$ as a composition of finitely many maps of arbitrarily small isometric distortion. In this paper, we construct…

Metric Geometry · Mathematics 2022-02-11 Alastair N. Fletcher , Vyron Vellis

We consider decoupling in the context of an effective quantum field theory of two scalar fields with well separated mass scales and a $Z_2\times Z_2$ symmetry. We first prove, using Wilson's exact renormalization group equation, that the…

High Energy Physics - Theory · Physics 2010-11-01 R. D. Ball , R. S. Thorne

We present an elementary approach to prove restriction theorems for particular surfaces for which the Tomas-Stein theorem does not apply, which in turn provide short proofs for well-known Strichartz estimates for associated PDEs. The method…

Analysis of PDEs · Mathematics 2021-11-30 Corentin Gentil , Côme Tabary

For rank 1 flat symmetric spaces, continuous orbital measures admit absolutely continuous convolution squares, except for Cartan type AI. Hence $L^1$-$L^2$ dichotomy for these spaces holds true in parallel to the compact and non-compact…

Representation Theory · Mathematics 2024-11-26 Sanjeev Kumar Gupta , Nico Spronk

We consider the decoupling theory of a broad class of $C^5$ surfaces $\mathbb{M} \subset \mathbb{R}^3$ lacking planar points. In particular, our approach also applies to surfaces which are not graphed by mixed homogeneous polynomials. The…

Classical Analysis and ODEs · Mathematics 2021-04-12 Dóminique Kemp

The Littlewood Conjecture in Diophantine approximation can be thought of as a problem about covering the plane by a union of hyperbolas centered at rational points. In this paper we consider the problem of translating the center of each…

Number Theory · Mathematics 2016-10-28 Alan Haynes , Henna Koivusalo

We prove a bilinear Strichartz type estimate for irrational tori via a decoupling type argument, \cite{bourgain2014proof}, recovering and generalizing the result of \cite{de2006global}. As a corollary, we derive a global well-posedness…

Analysis of PDEs · Mathematics 2017-12-22 Chenjie Fan , Gigliola Staffilani , Hong Wang , Bobby Wilson