نتایج جستجو برای: fractional order derivatives

تعداد نتایج: 1049867  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم پایه 1392

در این پایان نامه به بررسی دستگاه مستقل از زمان لورنز که یک دستگاه سه بعدی و غیر خطی می-باشد، می پردازیم. با تغییر روابط بین پارامترهای دستگاه، رفتارهای مختلفی که نقاط تعادل دستگاه از خود نشان می دهند را بررسی می کنیم. سپس با انتخاب یک پارامتر مناسب انشعاب، نشان می دهیم که یک انشعاب هاف در این دستگاه اتفاق می افتد. به همین منظور ابتدا دستگاه های معادلات دیفرانسیل به عنوان یک دستگاه پویا را بررس...

Journal: :bulletin of the iranian mathematical society 0
k. maleknejad school of‎ ‎mathematics‎, ‎iran university of science & technology‎, ‎narmak‎, ‎tehran 16846 13114‎, ‎iran. k. nouri department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran. l. torkzadeh department of mathematics‎, ‎faculty of mathematics‎, ‎statistics‎ ‎and computer sciences‎, ‎semnan university‎, ‎p.o‎. ‎box 35195-363‎, ‎semnan‎, ‎iran.

in this paper we apply hybrid functions of general block-pulse‎ ‎functions and legendre polynomials for solving linear and‎ ‎nonlinear multi-order fractional differential equations (fdes)‎. ‎our approach is based on incorporating operational matrices of‎ ‎fdes with hybrid functions that reduces the fdes problems to‎ ‎the solution of algebraic systems‎. ‎error estimate that verifies a‎ ‎converge...

ژورنال: پژوهش های ریاضی 2015
Arab Ameri , M., Mir Mehrabi , E,

Fractional derivatives and integrals are new concepts of derivatives and integrals of arbitrary order. Partial differential equations whose derivatives can be of fractional order are called fractional partial differential equations (FPDEs). Recently, these equations have received special attention due to their high practical applications. In this paper, we survey a rather general case of FPDE t...

Journal: :computational methods for differential equations 0
hammad khalil university of malakand rahmat khan university of malakand m. m. rashidi shanghai key lab of vehicle aerodynamics and vehicle thermal management systems, tongji university.

the paper is devoted to the study of brenstien polynomials and development of some new operational matrices of fractional order integrations and derivatives. the operational matrices are used to convert fractional order differential equations to systems of algebraic equations. a simple scheme yielding accurate approximate solutions of the couple systems for fractional differential equations is ...

A universal approach by Laplace transform to the variational iteration method for fractional derivatives with the nonsingular kernel is presented; in particular, the Caputo-Fabrizio fractional derivative and the Atangana-Baleanu fractional derivative with the non-singular kernel is considered. The analysis elaborated for both non-singular kernel derivatives is shown the necessity of considering...

In this paper, a new numerical method for solving the fractional Riccati differential  equation is presented. The fractional derivatives are described in the Caputo sense. The method is based upon  fractional-order Bernoulli functions approximations. First, the  fractional-order Bernoulli functions and  their properties are  presented. Then, an operational matrix of fractional order integration...

In this paper a new method for solving fuzzy differential equation with fractional order is considered. The fuzzy solution is construct by power series in the Caputo derivatives sense. To illustrate the reliability of method some examples are provided. In this paper a new method for solving fuzzy differential equation with fractional order is considered. The fuzzy solution is construct by power...

H Mostafaee

Based on recent studies by Guy Jumarie [1] which defines probability density of fractional order and fractional moments by using fractional calculus (fractional derivatives and fractional integration), this study expands the concept of probability density of fractional order by defining the fractional probability measure, which leads to a fractional probability theory parallel to the classical ...

The paper is devoted to the study of Brenstien Polynomials and development of some new operational matrices of fractional order integrations and derivatives. The operational matrices are used to convert fractional order differential equations to systems of algebraic equations. A simple scheme yielding accurate approximate solutions of the couple systems for fractional differential equations is ...

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