نتایج جستجو برای: ‎B-spline functions‎

تعداد نتایج: 1352466  

In this work, we proposed an effective method based on cubic and pantic B-spline scaling functions to solve partial differential equations of fractional order. Our method is based on dual functions of B-spline scaling functions. We derived the operational matrix of fractional integration of cubic and pantic B-spline scaling functions and used them to transform the mentioned equations to a syste...

Journal: :wavelets and linear algebra 0
ataollah askari hemmat depatrment of mathematics graduate university of advanced technology tahereh ismaeelpour shahid bahonar university of kerman habibollah saeedi shahid bahonar university of kerman, kerman, iran

in this work, we proposed an ef ective method based on cubic and pantic b-spline scaling functions to solve partial di fferential equations of frac- tional order. our method is based on dual functions of b-spline scaling func- tions. we derived the operational matrix of fractional integration of cubic and pantic b-spline scaling functions and used them to transform the mentioned equations to a ...

Journal: :iranian journal of science and technology (sciences) 2012
a. askari-hemmat

in this work we deal with the question: how can one improve the approximation level for some nonlinear integral equations? good candidates for this aim are semi orthogonal b-spline scaling functions and their duals. although there are different works in this area, only b-spline of degree at most 2 are used for this approximation. here we compute b-spline scaling functions of degree 4 and their ...

Journal: :Baghdad Science Journal 2006

H. Nouriani M. Amirfakhrian

In this paper we present a new kind of B-splines, called hyperbolic B-splines generated over the space spanned by hyperbolic functions and we use it to interpolate an arbitrary function on a set of points. Numerical tests for illustrating hyperbolic B-spline are presented.

Journal: :computational methods for differential equations 0
yousef edrisi tabriz payame noor university aghileh heydari ‎payame noor university

‎in this paper we introduce a numerical approach that solves optimal control problems (ocps)‎‎using collocation methods‎. ‎this approach is based upon b-spline functions‎.‎the derivative matrices between any two families of b-spline functions are utilized to‎‎reduce the solution of ocps to the solution of nonlinear optimization problems‎.‎numerical experiments confirm our theoretical findings‎.

In this paper fuzzy piecewise cubic interpolation is constructed for fuzzy data based on B-spline basis functions. We add two new additional conditions which guarantee uniqueness of fuzzy B-spline interpolation.Other conditions are imposed on the interpolation data to guarantee that the interpolation function to be a well-defined fuzzy function. Finally some examples are given to illustrate the...

‎In this paper we introduce a numerical approach that solves optimal control problems (OCPs) ‎using collocation methods‎. ‎This approach is based upon B-spline functions‎. ‎The derivative matrices between any two families of B-spline functions are utilized to‎ ‎reduce the solution of OCPs to the solution of nonlinear optimization problems‎. ‎Numerical experiments confirm our heoretical findings‎.

M. Amirfakhrian

In this paper we propose a method to approximate a parametric 3 D-function by bicubic B-spline functions

Journal: :journal of linear and topological algebra (jlta) 0
r firouzdor department of mathematics, islamic azad university and young researcher club, central tehran branch, central tehran branch a heidarnejad khoob department of mathematics, islamic azad university z mollaramezani department of mathematics, payameh noor university, new city hashgerd, hashgerd, iran

this paper describes an approximating solution, based on lagrange interpolation and spline functions, to treat functional integral equations of fredholm type and volterra type. this method can be extended to functional di erential and integro-di erential equations. for showing eciency of the method we give some numerical examples.

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