Perturbations of a fractional integration operator

1979 ◽  
Vol 13 (2) ◽  
pp. 145-146 ◽  
Author(s):  
M. M. Malamud
Author(s):  
Stefan Samko

AbstractWe show that the Riesz fractional integration operator I α(·) of variable order on a bounded open set in Ω ⊂ ℝn in the limiting Sobolev case is bounded from L p(·)(Ω) into BMO(Ω), if p(x) satisfies the standard logcondition and α(x) is Hölder continuous of an arbitrarily small order.


1995 ◽  
Vol 18 (4) ◽  
pp. 777-788 ◽  
Author(s):  
Bertram Ross ◽  
Stefan Samko

The fractional integralsIa+α(x)φof variable orderα(x)are considered. A theorem on mapping properties ofIa+α(x)φin Holder-type spacesHλ(x)is proved, this being a generalization of the well known Hardy-Littlewood theorem.


Author(s):  
Evgeniya Burtseva ◽  
Natasha Samko

AbstractWe prove the boundedness of the Riesz fractional integration operator from a generalized Morrey space


Author(s):  
Mohamed Aoun ◽  
Rachid Malti ◽  
Franc¸ois Levron ◽  
Alain Oustaloup

This paper deals with the design and simulation of continuous-time models with fractional differentiation orders. Two new methods are proposed. The first is an improvement of the approximation of the fractional integration operator using recursive poles and zeros proposed by Oustaloup (1995) and Lin (2001). The second improves the simulation schema by using a modal representation.


2016 ◽  
Vol 19 (3) ◽  
Author(s):  
Fethi Bouzeffour

AbstractIn this paper we consider the differential-difference reflection operator associated with a finite cyclic group,It is to emphasize that both hyper–Bessel operators and the so-called Poisson–Dimovski transformation (transmutation) are typical examples of the operators of generalized fractional calculus [


2020 ◽  
Vol 6 (8(77)) ◽  
pp. 23-28
Author(s):  
Shuen Wang ◽  
Ying Wang ◽  
Yinggan Tang

In this paper, the identification of continuous-time fractional order linear systems (FOLS) is investigated. In order to identify the differentiation or- ders as well as parameters and reduce the computation complexity, a novel identification method based on Chebyshev wavelet is proposed. Firstly, the Chebyshev wavelet operational matrices for fractional integration operator is derived. Then, the FOLS is converted to an algebraic equation by using the the Chebyshev wavelet operational matrices. Finally, the parameters and differentiation orders are estimated by minimizing the error between the output of real system and that of identified systems. Experimental results show the effectiveness of the proposed method.


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