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Many results related to quantitative problems in the metric theory of Diophantine approximation are asymptotic, such as the number of rational solutions to certain inequalities grows with the same rate almost everywhere modulo an asymptotic…

Number Theory · Mathematics 2024-03-01 Ying Wai Lee , Andrew Scoones

One of Legendre's theorems on the Diophantine equation $ax^2+by^2+cz^2=0$ provides necessary and sufficient conditions on the existence of nonzero rational solutions of this equation, which helps determine the existence of rational points…

Number Theory · Mathematics 2022-03-29 Jingbo Liu , Bruce McOsker

We establish a real version of Turrittin's result on polynomial and formal normal forms of linear systems of ODEs with meromorphic coefficients. Both the normal forms or the transformations used have only real coefficients. In order to…

Classical Analysis and ODEs · Mathematics 2023-05-16 Moulay Barkatou , Félix Álvaro Carnicero-Martín , Fernando Sanz Sánchez

We give upper and lower bounds for various Diophantine exponents associated with the standard linear actions of $\mathrm{SL}_2 ( \mathcal{O}_K )$ on the punctured complex plane $\mathbb{C}^2 \setminus \{ \mathbf{0} \}$, where $K$ is a…

Number Theory · Mathematics 2018-05-25 L. Singhal

Given any line in the plane, we strengthen the Littlewood conjecture by two logarithms for almost every point on the line, thereby generalising the fibre result of Beresnevich, Haynes, and Velani. To achieve this, we prove an effective…

Dynamical Systems · Mathematics 2023-12-05 Sam Chow , Lei Yang

The field of formal Laurent series is a natural analogue of the real numbers, and mathematicians have been translating well-known results about rational approximations to that setting. In the framework of power series over the rational…

Number Theory · Mathematics 2020-03-27 Nikoleta Kalaydzhieva

We refine a result of the last two Authors of [8] on a Diophantine approximation problem with two primes and a $k$-th power of a prime which was only proved to hold for $1<k<4/3$. We improve the $k$-range to $1<k\le 3$ by combining Harman's…

Number Theory · Mathematics 2018-02-14 Alessandro Gambini , Alessandro Languasco , Alessandro Zaccagnini

In 1926 Khintchine introduced a topological argument proving the existence of uncountably many nontrivial singular linear forms of $n \geq 2$ variables. Throughout the years, this argument has been extensively modified and generalized. Most…

Number Theory · Mathematics 2026-03-30 Leo Hong , Dmitry Kleinbock , Vasiliy Neckrasov

We study multiplicative Diophantine approximation property of vectors and compute Diophantine exponents of hyperplanes via dynamics.

Number Theory · Mathematics 2008-09-03 Yuqing Zhang

Let $1<k<7/6$, $\lambda_1,\lambda_2,\lambda_3$ and $\lambda_4$ be non-zero real numbers, not all of the same sign such that $\lambda_1/\lambda_2$ is irrational and let $\omega$ be a real number. We prove that the inequality…

Number Theory · Mathematics 2024-06-26 Alessandro Gambini

In this note, we shall give an improved lower bound for the argument of a power of a given algebraic number which has absolute value one but is not a root of unity.

Number Theory · Mathematics 2025-06-03 Tomohiro Yamada

We study connections between linear equations over various semigroups and recursively enumerable sets of positive integers. We give variants of the universal Diophantine representation of recursively enumerable sets of positive integers…

Formal Languages and Automata Theory · Computer Science 2024-06-04 Juha Honkala

In this paper we obtain the Lebesgue and Hausdorff measure results for the set of vectors satisfying infinitely many fully non-linear Diophantine inequalities. The set is associated with a class of linear inhomogeneous partial differential…

Number Theory · Mathematics 2018-04-25 Stephen Harrap , Mumtaz Hussain , Simon Kristensen

This note presents the basic mathematical structure of a new integer factorization method based on systems of linear Diophantine equations.

Number Theory · Mathematics 2007-05-23 N. A. Carella

We establish effective versions of Oppenheim's conjecture for generic inhomogeneous quadratic forms. We prove such results for fixed shift vectors and generic quadratic forms. When the shift is rational we prove a counting result which…

Number Theory · Mathematics 2020-08-18 Anish Ghosh , Dubi Kelmer , Shucheng Yu

We present a new method for expressing Chaitin's random real, Omega, through Diophantine equations. Where Chaitin's method causes a particular quantity to express the bits of Omega by fluctuating between finite and infinite values, in our…

Number Theory · Mathematics 2007-05-23 Toby Ord , Tien D. Kieu

Given integers $a,b>1$ with $\log_b{a}$ irrational, we investigate the connection between the conjectured asymptotic equidistribution of digits in the base-$b$ expansion of $a^n$ and the (non-)Diophantine properties of the number…

Dynamical Systems · Mathematics 2015-03-05 Edson de Faria , Charles Tresser

In this paper we introduce a new diophantine equation with prime numbers. Let $[\, \cdot\,]$ be the floor function. We prove that when $1<c<\frac{23}{21}$ and $\theta>1$ is a fixed, then every sufficiently large positive integer $N$ can be…

Number Theory · Mathematics 2021-11-05 S. I. Dimitrov

We present further results on a class of sums which involve complex powers of the distance to points in a two-dimensional square lattice and trigonometric functions of their angle, supplementing those in a previous paper (McPhedran et al,…

Mathematical Physics · Physics 2009-11-04 Ross C. McPhedran Lindsay C. Botten , Nicolae-Alexandru P. Nicorovici

There are abundant results on Diophantine approximation over fields of positive characteristic (see the survey papers [13, 25]), but there is very little information about simultaneous approximation. In this paper, we develop a technique of…

Number Theory · Mathematics 2017-11-13 Zhiyong Zheng