Results 21 to 30 of about 31,778 (269)

Small time reachable set of bilinear quantum systems [PDF]

open access: yes, 2012
This note presents an example of bilinear conservative system in an infinite dimensional Hilbert space for which approximate controllability in the Hilbert unit sphere holds for arbitrary small times.
Boussaid, Nabile   +2 more
core   +4 more sources

Well-posedness and approximate controllability of neutral network systems

open access: yesNetworks and Heterogeneous Media, 2021
In this paper, we study the concept of approximate controllability of retarded network systems of neutral type. On one hand, we reformulate such systems as free-delay boundary control systems on product spaces.
Yassine El Gantouh, Said Hadd
doaj   +1 more source

Approximate Boundary Controllability for Semilinear Delay Differential Equations

open access: yesJournal of Applied Mathematics, 2011
This paper considers the approximate controllability for a class of semilinear delay control systems described by a semigroup formulation with boundary control.
Lianwen Wang
doaj   +1 more source

On the Fattorini Criterion for Approximate Controllability and Stabilizability of Parabolic Systems [PDF]

open access: yes, 2014
In this paper, we consider the well-known Fattorini's criterion for approximate controllability of infinite dimensional linear systems of type $y'=A y+Bu$. We precise the result proved by H. O.
Badra, Mehdi, Takahashi, Takéo
core   +5 more sources

Multi-input Schrödinger equation: controllability, tracking, and application to the quantum angular momentum [PDF]

open access: yes, 2013
International audienceWe present a sufficient condition for approximate controllability of the bilinear discrete-spectrum Schrödinger equation exploiting the use of several controls.
Boscain, Ugo   +2 more
core   +5 more sources

Null controllability of a semilinear degenerate parabolic equation with a gradient term

open access: yesBoundary Value Problems, 2020
This paper concerns the null controllability of a semilinear control system governed by degenerate parabolic equation with a gradient term, where the nonlinearity of the problem is involved with the first derivative. We first establish the well-posedness
Fengdan Xu, Qian Zhou, Yuanyuan Nie
doaj   +1 more source

Minimal time problem for discrete crowd models with a localized vector field [PDF]

open access: yes, 2018
In this work, we study the minimal time to steer a given crowd to a desired configuration. The control is a vector field, representing a perturbation of the crowd velocity, localized on a fixed control set. We characterize the minimal time for a discrete
Duprez, Michel   +2 more
core   +3 more sources

Discussion on the Approximate Controllability of Hilfer Fractional Neutral Integro-Differential Inclusions via Almost Sectorial Operators

open access: yesFractal and Fractional, 2022
This paper focuses on the approximate controllability of Hilfer fractional neutral Volterra integro-differential inclusions via almost sectorial operators.
Chandrabose Sindhu Varun Bose   +4 more
doaj   +1 more source

Exact observability and controllability for linear neutral type systems [PDF]

open access: yes, 2015
The problem of exact observability is analyzed for a wide class of neutral type systems by an infinite dimensional approach. The duality with the exact controllabil-ity problem is the main tool.
Rabah, Rabah, Sklyar, Grigory
core   +4 more sources

On the finite approximate controllability for Hilfer fractional evolution systems

open access: yesAdvances in Difference Equations, 2020
In this paper, we consider the finite approximate controllability of some Hilfer fractional evolution systems. Using a variational approach and Schauder’s fixed point theorem, we give sufficient conditions for finite approximate controllability of ...
Xianghu Liu, Yanfang Li, Guangjun Xu
doaj   +1 more source

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