Results 31 to 40 of about 1,441 (286)

Population dynamical behavior of non-autonomous Lotka-Volterra competitive system with random perturbation [PDF]

open access: yes, 2009
In this paper, we consider a non-autonomous stochastic Lotka-Volterra competitive system dxi(t) = xi(t)[(bi(t)¡ nPj=1aij (t)xj (t))dt+¾i(t)dBi(t)], where Bi(t) (i = 1; 2; ¢ ¢ ¢ ; n) are independent standard Brownian motions. Some dynamical properties are
Key Laboratory for Applied Statistics of MOE (KLAS) (Funder)   +7 more
core   +1 more source

Global Attractivity of the Zero Solution for Wright's Equation [PDF]

open access: yesSIAM Journal on Applied Dynamical Systems, 2014
Summary: In 1955 E. M. Wright proved that all solutions of the delay differential equation \[ \dot x(t) = -\alpha (e^{x(t-1)}-1) \] converge to zero as \(t\to\infty\) for \(\alpha\in(0,3/2]\) and conjectured that this is even true for \(\alpha\in(0,\pi/2)\).
Balázs Bánhelyi   +3 more
openaire   +3 more sources

Global attractivity for scalar differential equations with Small Delay [PDF]

open access: yes, 2007
For scalar functional differential equations x'(t) = f (t,x_t ), we refine the method of Yorke and 3/2-type conditions to prove the global attractivity of the trivial solution.
Faria, Teresa   +3 more
core   +1 more source

On the global attractor of delay differential equations with unimodal feedback [PDF]

open access: yes, 2009
We give bounds for the global attractor of the delay differential equation x(over dot) (t) = -mu x(t) + f(x(t - tau)), where f is unimodal and has negative Schwarzian derivative.
Liz, Eduardo   +3 more
core   +1 more source

Unique Positive Almost Periodic Solution for Discrete Nonlinear Delay Survival Red Blood Cells Model

open access: yesAbstract and Applied Analysis, 2009
We obtain sufficient conditions which guarantee the global attractivity of solutions for nonlinear delay survival red blood cells model. Then, some criteria are established for the existence, uniqueness and global attractivity of positive almost periodic
Xitao Yang, Siping Tang
doaj   +1 more source

Almost global attraction in planar systems [PDF]

open access: yesSystems & Control Letters, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

Global attractivity in a nonlinear difference equation

open access: yesApplied Mathematics and Computation, 1994
Consider the nonlinear difference equation \[ \text{(E)} \qquad x_ n = a + \sum^ m_{k=1} {b_ k \over x_ n - k}\qquad(n = 0,1,2, \dots) \] where \(a, b_ 1,\dots,b_ m\) are nonnegative numbers with \(b = \sum^ m_{k=1} b_ k > 0\). The equation has a unique positive equilibrium point \(L = {a \over 2} + \sqrt {({a \over 2})^ 2 + B}\).
Philos, C. G.   +2 more
openaire   +2 more sources

Dynamics in a Nonautonomous Nicholson-Type Delay System

open access: yesJournal of Mathematics, 2021
A kind of Nicholson-type delay system is considered. Several conditions on the ultimate boundedness, extinction, permanence, periodic solution, and global attractivity of the system are established by employing the inequality techniques and comparison ...
Ahmadjan Muhammadhaji, Azhar Halik
doaj   +1 more source

Global attractivity of the equilibrium of for q \u3c p [PDF]

open access: yes, 2006
We investigate the global attractivity of the equilibrium of second-order difference equation xn+1 = pxn + xn-1/qx n + xn-1, n = 0, 1,... where the parameters p, q, q \u3c p and initial conditions x-1, x0 are nonnegative for all n .
Merino, Orlando, Kulenović, M. R.S.
core   +1 more source

Global Attractivity in a Genotype Selection Model

open access: yesRocky Mountain Journal of Mathematics, 2003
The authors offer a sufficient condition for global attractivity of the delay difference equation \[ x_{n+1}=x_n\exp(\beta_n (1-x_{n-\tau})/(1+x_{n-\tau})).
Tang, Xian Hua, Cheng, Sui Sun
openaire   +2 more sources

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