نتایج جستجو برای: riemann liouville fractional derivatives

تعداد نتایج: 178161  

Journal: :computational methods for differential equations 0
abdol ali neamaty department of mathematics, university of mazandaran, babolsar, iran bahram agheli department of mathematics, university of mazandaran, babolsar, iran mohammad adabitabar department of mathematics, qaemshahr branch, islamic azad university, qaemshahr, iran

approximating the solution of differential equations of fractional order is necessary because fractional differential equations have extensively been used in physics, chemistry as well as engineering fields. in this paper with central difference approximation and newton cots integration formula, we have found approximate solution for a class of boundary value problems of fractional order. three...

Journal: :CoRR 2013
Sara Gholipour P. Heydar Toosian Sh

2. Preliminaries Fractional differintegration’s set foot in control compass, also consistency of Caputo definition among the other fractional derivative’s definitions with engineering applications, is caused to devote this section to the basic definition of fractional calculus and its properties (Table 1). The Riemann–Liouville (RL) and the Caputo are the most popular fractional derivatives def...

Journal: :Fractal and fractional 2023

In this paper, by using the Leggett–Williams fixed-point theorem, we study existence of positive solutions to fractional differential equations with mixed Riemann–Liouville and quantum derivatives. To prove effectiveness our main result, investigate an interesting example.

Journal: :Proyecciones 2021

In this paper, we consider a p-Laplacian eigenvalue boundary value problem involving both right Caputo and left Riemann-Liouville types fractional derivatives. To prove the existence of solutions, apply Schaefer’s fixed point theorem. Furthermore, present Lyapunov inequality for corresponding problem.

G.B. Loghmani

In this paper, boundary value problems of fractional order are converted into an optimal control problems. Then an approximate solution is constructed from translations and dilations of a B-spline function such that the exact boundary conditions are satisfied. The fractional differential operators are taken in the Riemann-Liouville and Caputo sense. Several example are given and the optimal err...

2010
Christophe Tricaud YangQuan Chen Wen Chen

We introduce a formulation for the time-optimal control problems of systems displaying fractional dynamics in the sense of the Riemann-Liouville fractional derivatives operator. To propose a solution to the general time-optimal problem, a rational approximation based on the Hankel data matrix of the impulse response is considered to emulate the behavior of the fractional differentiation operato...

Journal: :journal of sciences, islamic republic of iran 2012
g.b. loghmani

in this paper, boundary value problems of fractional order are converted into an optimal control problems. then an approximate solution is constructed from translations and dilations of a b-spline function such that the exact boundary conditions are satisfied. the fractional differential operators are taken in the riemann-liouville and caputo sense. several example are given and the optimal err...

دهقان, رضا, کیانپور, محمد,

In this paper, an optimization method is used for solving a fractional optimal control problem with significant applications in chemical engineering. The considered optimal control is the control system of the isothermal continuous stirred tank reactors. The Riemann-Liouville fractional derivative is used to describe the mathematical model of control system.  For solving the fractional optimal ...

2016
Antonio Di Crescenzo Alessandra Meoli

In order to develop certain fractional probabilistic analogues of Taylor’s theorem and mean value theorem, we introduce the nth-order fractional equilibrium distribution in terms of the Weyl fractional integral and investigate its main properties. Specifically, we show a characterization result by which the nth-order fractional equilibrium distribution is identical to the starting distribution ...

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