Results 91 to 100 of about 11,736 (207)

Extension of a Diophantine triple with the property D(4)

open access: yes, 2021
We give an upper bound on the number of extensions of a triple to a quadruple for the Diophantine m- tuples with the property D(4).
Bliznac Trebješanin, Marija
core   +1 more source

The Number of Partitions of a Set and Superelliptic Diophantine Equations [PDF]

open access: yes, 2020
In this chapter we start by presenting some key results concerning the number of ordered k-partitions of multisets with equal sums. For these we give generating functions, recurrences and numerical examples.
Dorin Andrica   +5 more
core   +1 more source

A Linear Diophantine Fuzzy Graph-Theoretic Approach for Planar Dynamic Traffic Optimization

open access: yesApplied Computational Intelligence and Soft Computing
Dynamic urban traffic signal control systems face uncertainties such as fluctuating vehicle densities, unpredictable incidents, and varying driver behaviors, making precise decision-making highly challenging.
Waheed Ahmad Khan   +4 more
doaj   +1 more source

On the Relationship Between Matiyasevich's and Smorynski's Theorems

open access: yesScientific Annals of Computer Science, 2019
Let R be a non-zero subring of Q with or without 1. We assume that for every positive integer n there exists a computable surjection from N onto Rn. Every R \in {Z,Q} satisfi es these conditions.
Agnieszka Peszek, Apoloniusz Tyszka
doaj   +1 more source

A CLASS OF DIOPHANTINE EQUATIONS [PDF]

open access: yesProceedings of the National Academy of Sciences, 1959
Nach Verf. hat \[ \alpha^x+\beta^x=\alpha^n+\beta^n,\quad \alpha,\beta=\tfrac 12 (1\pm\sqrt{-7}), \] für gegebene \(n\) höchstens zwei Lösungen und für \(n=2^m\) genau die triviale Lösung \(x=2^m\).
openaire   +3 more sources

Integrality and the Laurent phenomenon for Somos 4 and Somos 5 sequences [PDF]

open access: yes, 2008
Somos 4 sequences are a family of sequences defined by a fourth-order quadratic recurrence relation with constant coefficients. For particular choices of the coefficients and the four initial data, such recurrences can yield sequences of integers.
Swart, Christine, Hone, Andrew N.W.
core   +1 more source

On a diophantine equation

open access: yes, 1967
Formulae are given furnishing all non-trivial integer solutions of the equation \[ (x^2-t^2)(y^2-t^2)=\biggl(\biggl({y-x\over 2}\biggr)^2-t^2\biggr)^2 \] considered for \(t=1\) by the reviewer and \textit{W. Sierpiński} [Elem. Math. 18, 132--133 (1963; Zbl 0126.07301)].
openaire   +2 more sources

A Diophantine equation appearing in Diophantine approximation

open access: yesIndagationes Mathematicae, 2001
All Diophantine equations \(ax^2+ by^2+ cz^2= 1+dxyz\) with \(a,b,c,d\in \mathbb{N}\) and \(a\mid d\), \(b\mid d\), \(c\mid d\), with solutions \((x,y,z)\in \mathbb{N}^3\) are classified. Equations of this type occur in connection with the approximation spectrum for quaternions.
Jin, Yuan, Schmidt, Asmus L.
openaire   +1 more source

On Diophantine singlefold specifications

open access: yesLe Matematiche
Summary: Consider an \((m+1)\)-ary relation \(\mathcal{R}\) over the set \(\mathbb{N}\) of natural numbers. Does there exist an arithmetical formula \(\varphi (a_0, \ldots, a_m, x_1, \ldots, x_k)\), not involving universal quantifiers, negation, or implication, such that representation and univocity conditions, viz., \[ \begin{aligned} \mathcal{R ...
Domenico Cantone   +2 more
openaire   +2 more sources

Application of the group action approach to solving linear Diophantine equations [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The article substantiates a method for solving linear Diophantine equations using the theory of group actions. The purpose of this paper is to introduce actions of certain groups on the set of linear Diophantine equations and to study their ...
Chistov, Ivan Sergeevich   +1 more
doaj   +1 more source

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