Results 31 to 40 of about 64,779 (321)

Global and local boundedness of Polish groups [PDF]

open access: yesIndiana University Mathematics Journal, 2013
We present a comprehensive theory of boundedness properties for Polish groups developed with a main focus on Roelcke precompactness (precompactness of the lower uniformity) and Property (OB) (boundedness of all isometric actions on separable metric spaces). In particular, these properties are characterised by the orbit structure of isometric actions on
openaire   +2 more sources

Global existence and boundedness of solutions of a certain nonlinear integro-differential equation of second order with multiple deviating arguments

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we consider the global existence and boundedness of solutions for a certain nonlinear integro-differential equation of second order with multiple constant delays.
Cemil Tunç, Timur Ayhan
doaj   +1 more source

The global attractive sets and synchronization of a fractional-order complex dynamical system

open access: yesAIMS Mathematics, 2023
This paper presents a chaotic complex system with a fractional-order derivative. The dynamical behaviors of the proposed system such as phase portraits, bifurcation diagrams, and the Lyapunov exponents are investigated.
Minghung Lin   +3 more
doaj   +1 more source

Dynamic Characteristics of Four Systems of Difference Equations with Higher Order

open access: yesAdvances in Mathematical Physics, 2021
In this paper, we explore the global dynamical characteristics, boundedness, and rate of convergence of certain higher-order discrete systems of difference equations.
Abdul Qadeer Khan   +2 more
doaj   +1 more source

Ultimate Boundedness and Finite Time Stability for a High Dimensional Fractional-Order Lorenz Model

open access: yesFractal and Fractional, 2022
In this paper, the global attractive set (GAS) and positive invariant set (PIS) of the five-dimensional Lorenz model with the fractional order derivative are studied.
Min Huang   +3 more
doaj   +1 more source

Neumann functions for second order elliptic systems with measurable coefficients

open access: yes, 2012
We study Neumann functions for divergence form, second order elliptic systems with bounded measurable coefficients in a bounded Lipschitz domain or a Lipschitz graph domain.
Choi, Jongkeun, Kim, Seick
core   +1 more source

Boundedness and Global Attractivity of a Higher‐Order Nonlinear Difference Equation [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2010
We investigate the local stability, prime period‐two solutions, boundedness, invariant intervals, and global attractivity of all positive solutions of the following difference equation: yn+1 = (r + pyn + yn−k)/(qyn + yn−k), n ∈ ℕ0, where the parameters p, q, r ∈ (0, ∞), k ∈ {1, 2, 3, …} and the initial conditions y−k, …, y0 ∈ (0, ∞). We show that the
Xiu-Mei Jia, Wan-Tong Li
openaire   +2 more sources

On the Recursive Sequence xn+1=A+xnp/xn−1p

open access: yesDiscrete Dynamics in Nature and Society, 2007
This paper studies the boundedness, global attractivity, and periodicity of the positive solutions of the difference equation xn+1=A+xnp/xn−1p, n∈ℕ0, with p,A∈(0,∞).
Stevo Stevic
doaj   +1 more source

Sufficient conditions for global boundedness in inertial chemotaxis systems with logistic growth

open access: yesAIMS Mathematics
This paper investigates a chemotaxis model described by the following system of partial differential equations: \begin{document}$ \begin{eqnarray*} \left\{ \begin{array}{llll} u_{t} = \Delta u - \nabla \cdot (u \mathbf{w}) + \gamma(u - u^{\alpha}), & x
Jiashan Zheng, Liqiong Pu
doaj   +1 more source

Global well-posedness and Turing–Hopf bifurcation of prey-taxis systems with hunting cooperation

open access: yesEuropean Journal of Applied Mathematics
This paper is concerned with a predator–prey system with hunting cooperation and prey-taxis under homogeneous Neumann boundary conditions. We establish the existence of globally bounded solutions in two dimensions.
Weirun Tao, Zhi-An Wang
doaj   +1 more source

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