Results 71 to 80 of about 2,483 (259)

Metrical Diophantine approximation for quaternions [PDF]

open access: yes, 2014
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 ...
Everitt, Brent, Dodson, Maurice
core   +1 more source

Witnessing a Poincaré recurrence with Mathematica

open access: yesResults in Physics, 2017
The often elusive Poincaré recurrence can be witnessed in a completely integrable system. For such systems, the problem of recurrence reduces to the classic mathematical problem of simultaneous Diophantine approximation of multiple numbers.
J.M. Zhang, Y. Liu
doaj   +1 more source

One Diophantine inequality with unlike powers of prime variables

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we show that if λ 1 $\lambda_{1}$ , λ 2 $\lambda_{2}$ , λ 3 $\lambda_{3}$ , λ 4 $\lambda _{4}$ , λ 5 $\lambda_{5}$ are nonzero real numbers not all of the same sign, η is real, 0 < σ < 1 720 ...
Wenxu Ge, Weiping Li
doaj   +1 more source

Diophantine approximation and automorphic spectrum

open access: yes, 2012
This paper establishes quantitative estimates on the rate of diophantine approximation in homogeneous varieties of semisimple algebraic groups. The estimates established generalize and improve previous ones, and in a number of important cases are shown ...
Nevo, Amos   +5 more
core   +1 more source

Introduction to Diophantine Approximation

open access: yesFormalized Mathematics, 2015
Abstract In this article we formalize some results of Diophantine approximation, i.e. the approximation of an irrational number by rationals. A typical example is finding an integer solution (x, y) of the inequality |xθ − y| ≤ 1/x, where 0 is a real number. First, we formalize some lemmas about continued fractions. Then we prove that the
openaire   +2 more sources

Simultaneous Diophantine approximation

open access: yesDuke Mathematical Journal, 1946
The simplest problems of Diophantine approximation relate to the approximation of a single irrational number 0 by rational numbers pjq, and the principal question is how small we can make the error 0 — pjq in relation to q for infinitely many approximations. It is well known that this question can be answered almost completely in terms of the continued
Davenport, H., Mahler, K.
openaire   +2 more sources

Simultaneous Diophantine approximation on the circle and Hausdorff dimension [PDF]

open access: yes, 2001
The functional relations between the coordinates of points on a manifold make the study of Diophantine approximation on manifolds much harder than the classical theory in which the variables are independent.
Dickinson, H.   +3 more
core   +1 more source

Bipolar q $q$‐Fractional Fuzzy Aggregation Operators for Multi‐Criteria Decision‐Making in Optimal Renewable Energy Selection

open access: yesEnergy Science &Engineering, EarlyView.
This study introduces bipolar q‐fractional fuzzy sets and new aggregation operators to support renewable energy selection under uncertainty. The proposed decision‐making framework effectively integrates positive and negative evaluations, ensuring consistent ranking and robust performance, as demonstrated through practical analysis and comparative ...
Sagvan Y. Musa   +3 more
wiley   +1 more source

An extension of the mixed integer part of a nonlinear form

open access: yesJournal of Inequalities and Applications, 2017
Our aim in this paper is to consider the integer part of a nonlinear form representing primes. We establish that if λ 1 , λ 2 , … , λ 8 $\lambda_{1},\lambda _{2},\ldots,\lambda_{8}$ are positive real numbers, at least one of the ratios λ i / λ j ...
Yunhan Wang, Jiani Mu
doaj   +1 more source

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