Results 1 to 10 of about 476,689 (165)

On a Diophantine Inequality with s Primes

open access: yesJournal of Mathematics, 2021
Let ...
Xiaofei Yan, Lu Zhang
doaj   +2 more sources

On the Ternary Exponential Diophantine Equation Equating a Perfect Power and Sum of Products of Consecutive Integers

open access: yesMathematics, 2021
Consider the Diophantine equation yn=x+x(x+1)+⋯+x(x+1)⋯(x+k), where x, y, n, and k are integers. In 2016, a research article, entitled – ’power values of sums of products of consecutive integers’, primarily proved the inequality n= 19,736 to obtain all ...
S. Subburam   +6 more
doaj   +1 more source

On the Multiplicity of a Proportionally Modular Numerical Semigroup

open access: yesDiscrete Dynamics in Nature and Society, 2021
A proportionally modular numerical semigroup is the set Sa,b,c of nonnegative integer solutions to a Diophantine inequality of the form ax mod b≤cx, where a,b, and c are positive integers.
Ze Gu
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

On some diophantine equations involving factorials [PDF]

open access: yesMathematica Bohemica
We study the Diophantine equations $(n!)^k - n^k = (k!)^n - k^n$ and $(n!)^k + n^k = (k!)^n + k^n$, where $k$ and $n$ are positive integers. According to H. Arzel, F. Luca (2017), only the first equation has nontrivial solutions. It is proved also that ${
Maciej Gnatowski
doaj   +1 more source

Is there a computable upper bound for the height of a solution of a Diophantine equation with a unique solution in positive integers?

open access: yesOpen Computer Science, 2017
Let Bn = {xi · xj = xk : i, j, k ∈ {1, . . . , n}} ∪ {xi + 1 = xk : i, k ∈ {1, . . . , n}} denote the system of equations in the variables x1, . . . , xn. For a positive integer n, let _(n) denote the smallest positive integer b such that for each system
Tyszka Apoloniusz
doaj   +1 more source

Observation of vibrating systems at different time instants

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2014
In this paper, we obtain new observability inequalities for the vibrating string. This work was motivated by a recent paper of A. Szijártó and J.
Ambroise Vest
doaj   +1 more source

From a packing problem to quantitative recurrence in [0,1] and the Lagrange spectrum of interval exchanges

open access: yesDiscrete Analysis, 2017
From a packing problem to quantitative recurrence in [0,1] and the Lagrange spectrum of interval exchanges, Discrete Analysis 2017:10, 25 pp. A basic fact in the theory of Diophantine approximation is Dirichlet's theorem that for every real number ...
Michael Boshernitzan, Vincent Delecroix
doaj   +1 more source

A Diophantine Inequality Involving Mixed Powers of Primes with a Specific Type

open access: yesMathematics
Let λ1,λ2,λ3 be nonzero real numbers, not all of the same sign; let λ1/λ2 be irrational; and let η be any real number. We investigate the solvability of the inequality |λ1p1+λ2p2+λ3p32+η|0 in the prime variables p1, p2, and p3.
Tatiana L. Todorova, Atanaska Georgieva
doaj   +1 more source
Some of the next articles are maybe not open access.

A ternary Diophantine inequality with prime numbers of a special form

Periodica Mathematica Hungarica, 2021
Min Zhang, Jinjiang Li
exaly  

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