نتایج جستجو برای: fuzzy volterra integral equations

تعداد نتایج: 429947  

Journal: :Electronic Journal of Qualitative Theory of Differential Equations 2021

2007
Lechosław Hącia Karol Bednarek Andrzej Tomczewski

In this paper the method of integral equations is proposed for some problems of electrical engineering ( current density, radiative heat transfer, heat conduction). Presented models lead to a system of Fredholm integral equations, integro-differential equations or Volterra-Fredholm integral equations, respectively. We propose various numerical methods (discretization method and projection metho...

2017
Mohamed A. Ramadan Mohamed R. Ali

This work, Bernoulli wavelet method is formed to solve nonlinear fuzzy Volterra-Fredholm integral equations. Bernoulli wavelets have been Created by dilation and translation of Bernoulli polynomials. First we introduce properties of Bernoulli wavelets and Bernoulli polynomials, and then we used it to transform the integral equations to the system of algebraic equations. We compared the result o...

Journal: :Applied Mathematics and Computation 2012
K. Parand J. A. Rad

In this paper a numerical technique is presented for the solution of fuzzy linear Volterra-Fredholm-Hammerstein integral equations. This method is a combination of collocation method and radial basis functions(RBFs).We first solve the actual set are equivalent to the fuzzy set, then answer 1-cut into the equation. Also high convergence rates and good accuracy are obtain with the propose method ...

Journal: :J. Applied Mathematics 2012
Ahmad Jafarian Safa Measoomy Nia Saber Tavan

The current research attempts to offer a new method for solving fuzzy linear Volterra integral equations system. This method converts the given fuzzy system into a linear system in crisp case by using the Taylor expansion method. Now the solution of this system yields the unknown Taylor coefficients of the solution functions. The proposed method is illustrated by an example and also results are...

Journal: :international journal of nonlinear analysis and applications 2015
s. moradi m. mohammadi anjedani e. analoei

in this paper we investigate the existence and uniqueness for volterra-fredholm type integral equations and extension of this type of integral equations. the result is obtained by using the  coupled fixed point theorems in the framework of banach space $ x=c([a,b],mathbb{r})$. finally, we  give an example to illustrate the applications of our results.

Journal: :computational methods for differential equations 0
amir hossein salehi shayegan k. ‎n‎. ‎toosi university of technology ali zakeri k. n. toosi university of technology m. r. ‎peyghami ‎k‎. ‎n‎. ‎toosi university of technology

‎in this paper‎, ‎an approach based on statistical spline model (ssm) and collocation method is proposed to solve volterra-fredholm integral equations‎. ‎the set of collocation nodes is chosen so that the points yield minimal error in the nodal polynomials‎. ‎under some standard assumptions‎, ‎we establish the convergence property of this approach‎. ‎numerical results on some problems are given...

Journal: :iranian journal of science and technology (sciences) 2014
e. rahimi

a method for solving a class of weakly singular volterra integral equations is given by using the fractional differential transform method. the approximate solution of these equa­tions is calculated in the form of a finite series with easily computable terms. while in some examples this series solution increased up to the exact closed solution, in some other examples, we can see the accuracy an...

Journal: :international journal of industrial mathematics 0
r. ketabchi‎ department of mathematics, science and research branch, islamic azad university,tehran,‎iran‎. r. mokhtari department of mathematical sciences, isfahan university of technology, isfahan 84156-83111, ‎iran‎. e. babolian department of mathematics, science and research branch, islamic azad university, tehran, ‎iran.

this paper is concerned with a technique for solving volterra integral equations in the reproducing kernel hilbert space. in contrast with the conventional reproducing kernel method, the gram-schmidt process is omitted here and satisfactory results are obtained.the analytical solution is represented in the form of series.an iterative method is given to obtain the approximate solution.the conver...

Journal: :علوم 0
اسماعیل بابلیان esmaeil babolian دانشگاه علیرضا وحیدی ar vahidi دانشگاه خوارزمی

in this paper, we conduct a comparative study between the homotopy perturbation method (hpm) and adomian’s decomposition method (adm) for analytic treatment of nonlinear volterra integral equations, and we show that the hpm with a specific convex homotopy is equivalent to the adm for these type of equations.

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