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In this paper we study a family of limsup sets that are defined using iterated function systems. Our main result is an analogue of Khintchine's theorem for these sets. We then apply this result to the topic of intrinsic Diophantine…

Number Theory · Mathematics 2021-04-30 Simon Baker

We generalize Khintchine's method of constructing totally irrational singular vectors and linear forms. The main result of the paper shows existence of totally irrational vectors and linear forms with large uniform Diophantine exponents on…

Number Theory · Mathematics 2020-09-28 Dmitry Kleinbock , Nikolay Moshchevitin , Barak Weiss

I present here the proofs of results, which are obtained in my papers "On the linear forms with algebraic coefficoients of logarithms of algebraic numbers", VINITI, 1996, 1617-B96, pp. 1 - 23 (in Russian), and "On the systems of linear…

Number Theory · Mathematics 2016-09-07 L. A. Gutnik

Analogues of the classical theorems of Khintchine, Jarnik and Jarnik-Besicovitch in the metrical theory of Diophantine approximation are established for quaternions by applying results on the measure of general `lim sup' sets.

Number Theory · Mathematics 2019-02-20 Maurice Dodson , Brent Everitt

Theorems of Khintchine, Groshev, Jarn\'ik, and Besicovitch in Diophantine approximation are fundamental results on the metric properties of $\Psi$-well approximable sets. These foundational results have since been generalised to the…

Number Theory · Mathematics 2025-07-09 Gerardo González Robert , Mumtaz Hussain , Nikita Shulga , Benjamin Ward

We prove that the convergence Khintchine theorem holds for affine hyperplanes whose parametrizing matrices satisfy a mild Diophantine condition. We use the dynamical method of Kleinbock-Margulis.

Number Theory · Mathematics 2007-05-23 Anish Ghosh

We prove the convergence and divergence cases of an inhomogeneous Khintchine-Groshev type theorem for dual approximation restricted to affine subspaces in $\mathbb{R} ^n$. The divergence results are proved in the more general context of…

Number Theory · Mathematics 2017-11-27 Victor Beresnevich , Arijit Ganguly , Anish Ghosh , Sanju Velani

We survey classical and recent results on exponents of Diophantine approximation. We give only a few proofs and highlight several open problems.

Number Theory · Mathematics 2015-02-11 Yann Bugeaud

The well known theorems of Khintchine and Jarn\'ik in metric Diophantine approximation provide comprehensive description of the measure theoretic properties of real numbers approximable by rational numbers with a given error. Various…

Number Theory · Mathematics 2015-05-27 Mumtaz Hussain

In this paper we investigate the metrical theory of Diophantine approximation associated with linear forms that are simultaneously small for infinitely many integer vectors; i.e. forms which are close to the origin. A complete…

Number Theory · Mathematics 2009-10-20 Mumtaz Hussain , Jason Levesley

We prove $S$-arithmetic inhomogeneous Khintchine type theorems on analytic nondegenerate manifolds. The divergence case, which constitutes the main substance of this paper, is proved in the general context of Hausdorff measures using…

Number Theory · Mathematics 2020-05-14 Shreyasi Datta , Anish Ghosh

This survey contains an exposition of ideas and results related to Faltings' proof of the conjectures of Shafarevich, Tate and Mordell. This paper originally appeared in 1986 as an Appendix to the Russian translation of Serge Lang,…

Number Theory · Mathematics 2009-12-23 Yuri G. Zarhin , Alexey N. Parshin

The overall aim of this note is to initiate a "manifold" theory for metric Diophantine approximation on the limit sets of Kleinian groups. We investigate the notions of singular and extremal limit points within the geometrically finite…

Number Theory · Mathematics 2018-04-03 Victor Beresnevich , Anish Ghosh , David Simmons , Sanju Velani

In this short paper we prove a quantitative version of the Khintchine-Groshev Theorem with congruence conditions. Our argument relies on a classical argument of Schmidt on counting generic lattice points, which in turn relies on a certain…

Number Theory · Mathematics 2022-08-01 Mahbub Alam , Anish Ghosh , Shucheng Yu

We extend the classical theorems of Khintchine and Schmidt in metric Diophantine approximation to the context of self-similar measures on $\mathbb{R}^d$. For this, we establish effective equidistribution of associated random walks on…

Dynamical Systems · Mathematics 2026-02-24 Timothée Bénard , Weikun He , Han Zhang

In twisted Diophantine approximation, for a fixed $m\times n$ matrix $\boldsymbol\alpha$ one is interested in sets of vectors $\boldsymbol\beta\in\mathbb R^m$ such that the system of affine forms $\mathbb R^n \ni \mathbf q \mapsto…

Number Theory · Mathematics 2026-02-10 Victor Beresnevich , David Simmons , Sanju Velani

We prove an analogue the Khinchin theorem for the Diophantine approximation by integer vectors lying on a quadratic variety. The proof is based on the study of a dynamical system on a homogeneous space of the orthogonal group. We show that…

Number Theory · Mathematics 2018-12-07 Alexander Gorodnik , Nimish A. Shah

The inhomogeneous Khintchine-Groshev Theorem is a classical generalization of Khintchine's Theorem in Diophantine approximation, by approximating points in $\mathbb{R}^m$ by systems of linear forms in $n$ variables. Analogous to the…

Number Theory · Mathematics 2023-12-05 Manuel Hauke

The goal of this paper is to generalize the main results of [KM] and subsequent papers on metric Diophantine approximation with dependent quantities to the set-up of systems of linear forms. In particular, we establish `joint strong…

Number Theory · Mathematics 2011-06-10 Dmitry Kleinbock , Gregory Margulis , Junbo Wang

In his 1960 paper, Schmidt studied a quantitative type of Khintchine-Groshev theorem for general (higher) dimensions. Recently, a new proof of the theorem was found, which made it possible to relax the dimensional constraint and more…

Number Theory · Mathematics 2023-03-22 Jiyoung Han