Results 1 to 10 of about 1,794,969 (184)

On Discrete Time Wilson Systems [PDF]

open access: yesJournal of Mathematics, 2020
In this paper, we define the discrete time Wilson frame (DTW frame) for l2ℤ and discuss some properties of discrete time Wilson frames. Also, we give an interplay between DTW frames and discrete time Gabor frames.
Teena Kohli, Suman Panwar, S. K. Kaushik
doaj   +2 more sources

Controlling hopf bifurcations: Discrete-time systems [PDF]

open access: yesDiscrete Dynamics in Nature and Society, 2000
Bifurcation control has attracted increasing attention in recent years. A simple and unified state-feedback methodology is developed in this paper for Hopf bifurcation control for discrete-time systems. The control task can be either shifting an existing
Guanrong Chen   +3 more
doaj   +2 more sources

Discrete-time multi-scale systems [PDF]

open access: yesIntegral Equations and Operator Theory, 2009
We introduce multi-scale filtering by the way of certain double convolution systems. We prove stability theorems for these systems and make connections with function theory in the poly-disc. Finally, we compare the framework developed here with the white
Alpay, Daniel, Mboup, Mamadou
core   +9 more sources

Convergence time towards periodic orbits in discrete dynamical systems. [PDF]

open access: yesPLoS ONE, 2014
We investigate the convergence towards periodic orbits in discrete dynamical systems. We examine the probability that a randomly chosen point converges to a particular neighborhood of a periodic orbit in a fixed number of iterations, and we use ...
Jesús San Martín, Mason A Porter
doaj   +4 more sources

Discrete time model of sexual systems

open access: yesHeliyon, 2023
Small factors are the biggest contributors to the biggest changes in an ecosystem which may lead to its demise. Simple things such as tweaking the humidity or tampering with the temperature can be the downfall of the habitants and the ecosystem itself ...
Uygun Jamilov   +2 more
doaj   +1 more source

Stability Criterion for Discrete-Time Systems

open access: yesJournal of Inequalities and Applications, 2010
This paper is concerned with the problem of delay-dependent stability analysis for discrete-time systems with interval-like time-varying delays. The problem is solved by applying a novel Lyapunov functional, and an improved delay-dependent stability ...
K. Ratchagit, Vu N. Phat
doaj   +2 more sources

Al'brekht's Method in Infinite Dimensions [PDF]

open access: yes, 2020
In 1961 E. G. Albrekht presented a method for the optimal stabilization of smooth, nonlinear, finite dimensional, continuous time control systems.
Krener, AJ
core   +3 more sources

Approximate Controllability of Abstract Discrete-Time Systems

open access: yesAdvances in Difference Equations, 2010
Approximate controllability for semilinear abstract discrete-time systems is considered. Specifically, we consider the semilinear discrete-time system , , where are bounded linear operators acting on a Hilbert space , are -valued bounded linear ...
Hernán R. Henríquez   +1 more
doaj   +2 more sources

Finite-time stability of discrete-time systems with time-varying delay [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
Finite-time stability can be used in all applications where large values of the state are not acceptable. In this paper, finite-time stability problem for a class of linear time-varying delay systems is studied. Based on Lyapunov-like functions method
Stojanović Sreten B.   +2 more
doaj   +1 more source

Some results on cascade discrete-time systems

open access: yesDiscrete Dynamics in Nature and Society, 2006
We present sufficient conditions for global asymptotic stability of cascade discrete-time systems. Considering failure of the global asymptotic stability in some cascade systems, we give an estimate of the region of attraction of the systems.
Xiao-Ming Bai   +2 more
doaj   +2 more sources

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