Results 31 to 40 of about 321 (189)

A number theoretical method for calculating high order correlation functions of the Tchebyscheff maps

open access: yes四川大学学报. 自然科学版, 2022
Correlation functions play a key role in the statistical description of chaotic maps. The main concern of this paper is the calculation of correlation functions of the Tchebyscheff maps, which is traditionally handled by using the graph theoretical ...
ZHOU Xing-Wang
doaj  

Exponential diophantine equations and the irrationality of certain real numbers [PDF]

open access: yes, 1991
We apply Schlickewei's recent result on the S-unit equation to show that certain purely exponential diophantine equations have only finitely many solutions.
Paul-Georg Becker, Becker, Paul-Georg
core   +1 more source

On the exponential Diophantine equation $x^2+p^mq^n=2y^p$ [PDF]

open access: yes, 2023
We study the exponential Diophantine equation $x^2+p^mq^n=2y^p$ in positive integers $x,y,m,n$, and odd primes $p$ and $q$ using primitive divisors of Lehmer sequences in combination with elementary number theory.
Chakraborty, Kalyan, Hoque, Azizul
core   +1 more source

Nonlinear-Adaptive Mathematical System Identification

open access: yesComputation, 2017
By reversing paradigms that normally utilize mathematical models as the basis for nonlinear adaptive controllers, this article describes using the controller to serve as a novel computational approach for mathematical system identification.
Timothy Sands
doaj   +1 more source

On the moments of exponential sums over r$r$‐free polynomials

open access: yesBulletin of the London Mathematical Society, Volume 58, Issue 7, July 2026.
Abstract Let Fq[t]${\mathbb {F}}_q[t]$ denote the ring of polynomials over the finite field Fq${\mathbb {F}}_q$. Building off of techniques of Balog and Ruzsa and of Keil in the integer setting, we determine the precise order of magnitude of k$k$th moments of exponential sums over r$r$‐free polynomials in Fq[t]${\mathbb {F}}_q[t]$ for all k>0$k>0$.
Ben Doyle
wiley   +1 more source

On the diophantine equation Px + Qy = z² [PDF]

open access: yes
Diophantine equation is a polynomial equation with two or more unknowns which integral solutions are required. An exponential Diophantine equation is an equation that has additional variable or variables occurring as exponents. This paper concentrates on
Japar, Izzati Izyani   +2 more
core   +1 more source

Exploration of Solutions for an Exponential Diophantine Equation px+ (p +1)y= z2 [PDF]

open access: yes, 2021
In this text, the exclusive exponential Diophantine equation px + (p + 1)y= z2such that the sum of integer powers  and  of two consecutive prime numbers engrosses a square is examined or estimating enormous integer solutions by exploiting the ...
et. al., P. Sandhya,
core  

On the Diophantine Equation $(8r^2+1)^x+(r^2-1)^y=(3r)^z$ Regarding Terai's Conjecture

open access: yesCommunications in Advanced Mathematical Sciences
This study establishes that the sole positive integer solution to the exponential Diophantine equation $(8r^2+1)^x+(r^2-1)^y=(3r)^z$ is $(x,y,z)=(1,1,2)$ for all $r>1$.
Murat Alan, Tuba Çokoksen
doaj   +1 more source

Solutions of a family exponential Diophantine equation and the solutions of Goormaghtigh's conjecture for m=3(一类指数丢番图方程的解及m=3的Goormaghtigh猜想)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2007
用渐近连分数的性质和Pell方程的解类特点,得到了指数丢番图方程的解(x,y,n)的性质及其较为精确的上界 ...
YANGShi-chun(杨仕椿), HEBo(何波)
doaj   +1 more source

Multiplicatively dependent integer vectors on a hyperplane

open access: yesJournal of the London Mathematical Society, Volume 114, Issue 1, July 2026.
Abstract We establish several asymptotic formulae and upper bounds for the count of multiplicatively dependent integer vectors that lie on a fixed affine hyperplane and have bounded height. This work constitutes a direct extension of the results obtained by Pappalardi, Sha, Shparlinski, and Stewart.
Muhammad Afifurrahman   +2 more
wiley   +1 more source

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