نتایج جستجو برای: fractional differintegral operator

تعداد نتایج: 151697  

Journal: :iranian journal of science and technology (sciences) 2013
g. h. erjaee

in this article we implement an operational matrix of fractional integration for legendre polynomials. we proposed an algorithm to obtain an approximation solution for fractional differential equations, described in riemann-liouville sense, based on shifted legendre polynomials. this method was applied to solve linear multi-order fractional differential equation with initial conditions, and the...

Abstract. In this work, it has been shown that the combined use of exponential operators and integral transforms provides a powerful tool to solve time fractional generalized KdV of order 2q+1 and certain fractional PDEs. It is shown that exponential operators are an effective method for solving certain fractional linear equations with non-constant coefficients. It may be concluded that the com...

Journal: :Applied sciences 2022

The present paper proposes a framework for the systematic and fruitful application of complex-order operators modeling control applications. We emphasize that special care must be taken when using elements to ensure their responses real-valued stimuli are themselves. proposed enable seamless generalization conventional real integer-order counterparts. further demonstrate how any linear operator...

1998
David Byers James Davidson David Peel Yoshinori Suzuki

This paper extends previous analyses of aggregate political popularity (partisanship) data by BoxSteffensmeier and Smith (1996) for the US, and Byers, Davidson and Peel (1997) for the UK. These studies independently found that the time series of poll ratings are well modelled by fractionally integrated processes. Here, the analysis is conducted for 26 political parties in eight different countr...

Journal: :Signal Processing 2015
M. Cristina Caputo Delfim F. M. Torres

We prove duality between the left and right fractional derivatives, independently on the type of fractional operator. Main result asserts that the right derivative of a function is the dual of the left derivative of the dual function or, equivalently, the left derivative of a function is the dual of the right derivative of the dual function. Such duality between left and right fractional operat...

2014
Chuanzhi Bai

and Applied Analysis 3 ii If γ n − 1 and f ∈ ACn−1 a, b ,R , then CaD t f t and t Dn−1 b f t are represented by C aD n−1 t f t f n−1 t , t D n−1 b f t −1 n−1 f n−1 t , t ∈ a, b . 2.3 With these definitions, we have the rule for fractional integration by parts, and the composition of the Riemann-Liouville fractional integration operator with the Caputo fractional differentiation operator, which ...

Journal: :Computers & Mathematics with Applications 2010
M. Muslim Carlos Conca A. K. Nandakumaran

In this paper we shall study a fractional integral equation in an arbitrary Banach space X . We used the analytic semigroups theory of linear operators and the fixed point method to establish the existence and uniqueness of solutions of the given problem.We also prove the existence of global solution. The existence and convergence of the Faedo–Galerkin solution to the given problem is also prov...

Journal: :SIAM J. Numerical Analysis 2014
Qinwu Xu Jan S. Hesthaven

We propose a discontinuous Galerkin method for fractional convection-diffusion equations with a superdiffusion operator of order α(1 < α < 2) defined through the fractional Laplacian. The fractional operator of order α is expressed as a composite of first order derivatives and a fractional integral of order 2 − α. The fractional convection-diffusion problem is expressed as a system of low order...

2011
Wolfgang Desch

We examine the stochastic parabolic integral equation of convolution type U(t) +A ∫ t 0 k1(t− s)U(s) ds = ∫ t 0 k2(t− s)G(s) dWH(s), t ≥ 0, where U(t) takes values in Lq(O;R) with O a σ-finite measure space, and q ∈ [2,∞). The linear operator A maps D(A) ⊂ Lq(O;R) into Lq(O;R), is nonnegative and admits a bounded H∞-calculus on Lq(O;R). The kernels are powers of t, with k1(t) = 1 Γ(α) t α−1, k2...

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