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In these notes, we begin by recalling aspects of the classical theory of metric Diophantine approximation; such as theorems of Khintchine, Jarn\'{\i}k, Duffin-Schaeffer and Gallagher. We then describe recent strengthening of various…

Number Theory · Mathematics 2016-01-11 Victor Beresnevich , Felipe Ramírez , Sanju Velani

In this paper we develop the convergence theory of simultaneous, inhomogeneous Diophantine approximation on manifolds. A consequence of our main result is that if the manifold $M \subset \mathbb{R}^n$ is of dimension strictly greater than…

Number Theory · Mathematics 2015-12-17 Victor Beresnevich , Robert C. Vaughan , Sanju Velani , Evgeniy Zorin

Let $\cS_n(\psi_1,...,\psi_n)$ denote the set of simultaneously $(\psi_1,...,\psi_n)$--approximable points in $\R^n$ and $\cSM_n(\psi)$ denote the set of multiplicatively $\psi$--approximable points in $\R^n$. Let $\cM$ be a manifold in…

Number Theory · Mathematics 2007-05-23 Victor Beresnevich , Sanju Velani

The goal of this paper is to establish a complete Khintchine-Groshev type theorem in both homogeneous and inhomogeneous setting, on analytic nondegenerate manifolds over a local field of positive characteristic. The dual form of Diophantine…

Number Theory · Mathematics 2024-06-14 Sourav Das , Arijit Ganguly

In Diophantine approximation, inhomogeneous problems are linked with homogeneous ones by means of the so-called Transference Theorems. We revisit this classical topic by introducing new exponents of Diophantine approximation. We prove that…

Number Theory · Mathematics 2007-05-23 Yann Bugeaud , Michel Laurent

Recently, Ghosh \& Haynes \cite{HG} proved a Khintchine-type result for the problem of Diophantine approximation in certain projective spaces. In this note we complement their result by observing that a Jarn\'{\i}k-type result also holds…

Number Theory · Mathematics 2016-05-25 Stephen Harrap , Mumtaz Hussain

We establish a weighted simultaneous Khintchine-type theorem, both convergence and divergence, for all nondegenerate manifolds, which answers a problem posed in [Math. Ann., 337(4):769-796, 2007]. This extends the main results of [Acta…

Number Theory · Mathematics 2026-02-12 Victor Beresnevich , Shreyasi Datta , Lei Yang

In this paper we develop a metric theory of inhomogeneous Diophantine approximation for the case of a fixed matrix. We use transference principle to connect uniform Diophantine properties of a pair $(\Theta, \pmb{\eta})$ of a matrix and a…

Number Theory · Mathematics 2025-11-18 Nikolay Moshchevitin , Vasiliy Neckrasov

In a landmark paper, D.Y. Kleinbock and G.A. Margulis established the fundamental Baker-Sprindzuk conjecture on homogeneous Diophantine approximation on manifolds. Subsequently, there has been dramatic progress in this area of research.…

Number Theory · Mathematics 2014-02-26 Victor Beresnevich , Sanju Velani

In this paper the metric theory of Diophantine approximation associated with the small linear forms is investigated. Khintchine-Groshev theorems are established along with Hausdorff measure generalization without the monotonic assumption on…

Number Theory · Mathematics 2012-12-14 Mumtaz Hussain , Simon Kristensen

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

In a ground-breaking work \cite{BY}, Beresnevich and Yang recently proved Khintchine's theorem in simultaneous Diophantine approximation for nondegenerate manifolds resolving a long-standing problem in the theory of Diophantine…

Number Theory · Mathematics 2022-09-29 Shreyasi Datta

We prove a version of the Khinchine--Groshev theorem for Diophantine approximation of matrices subject to a congruence condition. The proof relies on an extension of the Dani correspondence to the quotient by a congruence subgroup. This…

Number Theory · Mathematics 2019-02-06 Erez Nesharim , Rene Rühr , Ronggang Shi

We establish a `mixed' version of a fundamental theorem of Khintchine within the field of simultaneous Diophantine approximation. Via the notion of ubiquity we are able to make significant progress towards the completion of the metric…

Number Theory · Mathematics 2013-02-15 Stephen Harrap , Tatiana Yusupova

Let $\cal C$ be a non--degenerate planar curve and for a real, positive decreasing function $\psi$ let $\cal C(\psi)$ denote the set of simultaneously $\psi$--approximable points lying on $\cal C$. We show that $\cal C$ is of Khintchine…

Number Theory · Mathematics 2007-05-23 Victor Beresnevich , Detta Dickinson , Sanju Velani

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

In this paper we prove quantitative results about geodesic approximations to submanifolds in negatively curved spaces. Among the main tools is a new and general Jarn\'{i}k-Besicovitch type theorem in Diophantine approximation. The framework…

Metric Geometry · Mathematics 2024-02-21 Anish Ghosh , Debanjan Nandi

We prove over fields of power series the analogues of several Diophantine approximation results obtained over the field of real numbers. In particular we establish the power series analogue of Kronecker's theorem for matrices, together with…

Number Theory · Mathematics 2019-11-27 Yann Bugeaud , Zhenliang Zhang

We introduce an inhomogeneous variant of Kaufman's measure, with applications to diophantine approximation. In particular, we make progress towards a problem related to Littlewood's conjecture.

Number Theory · Mathematics 2023-12-29 Sam Chow , Agamemnon Zafeiropoulos , Evgeniy Zorin

S-arithmetic Khintchine-type theorem for products of non-degenerate analytic p-adic manifolds is proved for the convergence case. In the p-adic case the divergence part is also obtained.

Number Theory · Mathematics 2011-09-30 Amir Mohammadi , Alireza Salehi Golsefidy