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We prove a generalization of W.M. Schmidt's theorem related to the Diophantine approximations for a linear form of the type $\alpha_1x_1+\alpha_2x_2 +y$ with {\it positive} integers $x_1,x_2$.

Number Theory · Mathematics 2011-12-22 Nikolay G. Moshchevitin

We consider rational points on the sphere and investigate their equidistribution in shrinking spherical caps. For the two-dimensional sphere, we leverage Hecke operators to obtain a significantly improved small-scale equidistribution bound,…

Number Theory · Mathematics 2025-02-26 Claire Burrin , Matthias Gröbner

The primary goal of this paper is to complete the theory of metric Diophantine approximation initially developed in [Ann. of Math.(2) 166 (2007), p.367-426] for $C^3$ non-degenerate planar curves. With this goal in mind, here for the first…

Number Theory · Mathematics 2010-02-16 Victor Beresnevich , Evgeniy Zorin

In this work we proof the following theorem which is, in addition to someother lemmas, our main result:\noindent \textbf{theorem}. Let$\ X=\{ ( x\_{1}\text{, }%t\_{1}) \text{, }( x\_{2}\text{, }t\_{2}) \text{, ..., }(x\_{n}\text{,…

Number Theory · Mathematics 2016-05-10 Abdelmadjid Boudaoud

We quantify the density of rational points in the unit sphere $S^n$, proving analogues of the classical theorems on the embedding of $\q^n$ into $\r^n$. Specifically, we prove a Dirichlet theorem stating that every point $\alpha \in S^n$ is…

Number Theory · Mathematics 2013-05-28 Dmitry Kleinbock , Keith Merrill

In 2002, Evertse and Schlickewei obtained a quantitative version of the so-called Absolute Parametric Subspace Theorem. This result deals with a parametrized class of twisted heights. One of the consequences of this result is a quantitative…

Number Theory · Mathematics 2023-09-19 Jan-Hendrik Evertse , Roberto G. Ferretti

The goal of this paper is to develop the theory of weighted Diophantine approximation of rational numbers to $p$-adic numbers. Firstly, we establish complete analogues of Khintchine's theorem, the Duffin-Schaeffer theorem and the…

Number Theory · Mathematics 2021-07-08 Victor Beresnevich , Jason Levesley , Benjamin Ward

We investigate the question of how well points on a nondegenerate $k$-dimensional submanifold $M \subseteq \mathbb R^d$ can be approximated by rationals also lying on $M$, establishing an upper bound on the "intrinsic Dirichlet exponent"…

Number Theory · Mathematics 2018-01-23 Lior Fishman , Dmitry Kleinbock , Keith Merrill , David Simmons

Metric Diophantine approximation in its classical form is the study of how well almost all real numbers can be approximated by rationals. There is a long history of results which give partial answers to this problem, but there are still…

Number Theory · Mathematics 2009-07-02 Alan K. Haynes

Dirichlet's uniform approximation theorem is a fundamental result in Diophantine approximation that gives an optimal rate of approximation with a given bound. We study uniform Diophantine approximation properties on the Hecke group $\mathbf…

Number Theory · Mathematics 2025-03-25 Ayreena Bakhtawar , Dong Han Kim , Seul Bee Lee

In one-dimensional Diophantine approximation, the Diophantine properties of a real number are characterized by its partial quotients, especially the growth of its large partial quotients. Notably, Kleinbock and Wadleigh [Proc. Amer. Math.…

Dynamical Systems · Mathematics 2025-10-08 Qian Xiao

Classical results on Diophantine approximation, such as Roth's theorem, provide the most effective techniques for proving the transcendence of special kinds of continued fractions. Multidimensional continued fractions are a generalization…

Number Theory · Mathematics 2025-05-07 Federico Accossato , Nadir Murru , Giuliano Romeo

We study the diophantine exponent of analytic submanifolds of the space of m by n real matrices, answering questions of Beresnevich, Kleinbock and Margulis. We identify a family of algebraic obstructions to the extremality of such a…

Number Theory · Mathematics 2015-01-22 Menny Aka , Emmanuel Breuillard , Lior Rosenzweig , Nicolas de Saxcé

We investigate the number of integer solutions to a multiplicative Diophantine approximation problem and show that the associated counting function converges in distribution to a normal law. Our approach relies on the analysis of…

Number Theory · Mathematics 2026-01-21 Michael Björklund , Reynold Fregoli , Alexander Gorodnik

We study a norm sensitive Diophantine approximation problem arising from the work of Davenport and Schmidt on the improvement of Dirichlet's theorem. Its supremum norm case was recently considered by the first-named author and Wadleigh, and…

Number Theory · Mathematics 2020-08-19 Dmitry Kleinbock , Anurag Rao

In 1974, M. B. Nathanson proved that every irrational number $\alpha$ represented by a simple continued fraction with infinitely many elements greater than or equal to $k$ is approximable by an infinite number of rational numbers $p/q$…

Number Theory · Mathematics 2024-07-17 Jaroslav Hančl , Tho Phuoc Nguyen

We study metric Diophantine approximation in local fields of positive characteristic. Specifically, we study the problem of improving Dirichlet's theorem in Diophantine approximation and prove very general results in this context.

Number Theory · Mathematics 2019-08-15 Arijit Ganguly , Anish Ghosh

Let (X,d) be a metric space and (\Omega, d) a compact subspace of X which supports a non-atomic finite measure m. We consider `natural' classes of badly approximable subsets of \Omega. Loosely speaking, these consist of points in \Omega…

Number Theory · Mathematics 2007-05-23 Simon Kristensen , Rebecca Thorn , Sanju Velani

In this extended abstract we deal with the relations between the numerical/diophantine approximation and the symbolic/algebraic geometry approachs to solving of multivariate diophentine polynomial systems, obtaining several consecuences…

Algebraic Geometry · Mathematics 2025-10-20 D. Castro , K. Haegele , J. E. Morais , L. M. Pardo

We prove a refined version of Markov's theorem in Diophantine approximation. More precisely, we characterize completely the set of irrationals $x$ such that $\left|x-\frac{p}{q}\right|<\frac{1}{3q^2}$ has only finitely many rational…

Number Theory · Mathematics 2026-02-11 Zhe Cao , Harold Erazo , Carlos Gustavo Moreira