Results 31 to 40 of about 32,211 (287)
On Local and Controlled Approximation Order
Journal of Approximation Theory, 1993 The authors deal with approximations to smooth functions by objects which are essentially discrete convolutions. The purpose is to get error estimates for approximation power of dilates of these convolutions in terms of the dilation parameter \(h\).
Halton, E.J., Light, W.A.
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On the finite approximate controllability for Hilfer fractional evolution systems
Advances 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
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上海师范大学学报. 自然科学版, 2020 We discuss the finite-approximate controllability of Hilfer fractional evolution equations of Sobolev type with nonlocal conditions in Hilbert spaces.With the assumption that the corresponding linear system is approximately controllable,we obtain ...
WANG Xingzhao +3 more
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Schauder’s fixed-point theorem in approximate controllability problems
International Journal of Applied Mathematics and Computer Science, 2016 The main objective of this article is to present the state of the art concerning approximate controllability of dynamic systems in infinite-dimensional spaces.
Babiarz Artur +2 more
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Alexandria Engineering Journal, 2023 The approximate controllability results of Atangana-Baleanu fractional stochastic integrodifferential systems with infinite delay are the topic of this paper.
M. Johnson +5 more
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On the Fattorini Criterion for Approximate Controllability and Stabilizability of Parabolic Systems [PDF]
, 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
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Advances in Difference Equations, 2021 The approximate controllability of second-order integro-differential evolution control systems using resolvent operators is the focus of this work. We analyze approximate controllability outcomes by referring to fractional theories, resolvent operators ...
Velusamy Vijayakumar +4 more
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Ain Shams Engineering Journal, 2023 This paper discusses the approximate controllability of hemivariational inequalities of the Sobolev-type Hilfer fractional neutral stochastic evolution system.
Yong-Ki Ma +5 more
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Multi-input Schrödinger equation: controllability, tracking, and application to the quantum angular momentum [PDF]
, 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
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Approximating with Lipschitz Controls
Journal of Approximation Theory, 2000 The author considers nonlinear nonconvex control systems of the form \(x'(t) = f(x(t),u(t))\) where \(u(t)\) belongs to a connected subset \(\Omega\) of a compact metric space. Introducing two families of time-dependent controls, the measurable one and the Lipschitz one, for a given initial value \(x\in \mathbb{R}^n\), the author estimates the distance
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