Approximation of the n-th Root of a Fuzzy
Number by Polynomial Form Fuzzy
Numbers
Majid
Amirfakhrian
Assistant professor of Islamic Azad University of Tehran, Central Teharn Branch
author
text
article
2013
per
In this paper we introduce the root of a fuzzy number, and we present aniterative method to nd it, numerically. We present an algorithm to generatea sequence that can be converged to n-th root of a fuzzy number.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
1
16
http://msj.iau-arak.ac.ir/article_514426_43e071b3d85561bc60fc758643f8024a.pdf
Application of variational iteration method
for solving singular two point boundary
value problems
Shadan
Sadigh Behzadi
Ismaic Azad University of Ghazvin, Iran
author
text
article
2013
per
In this paper, He's highly prolic variational iteration method is applied ef-fectively for showing the existence, uniqueness and solving a class of singularsecond order two point boundary value problems. The process of nding solu-tion involves generation of a sequence of appropriate and approximate iterativesolution function equally likely to converge to the exact solution of the givenproblem which being processed out and improvised on its own at every step re-cursively. Moreover, Illustrative examples available to the context in literaturewhen treated with, by application of such proposed method fetch encouragingresults so as to justify and reveal its eciency and usefulness of the method.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
17
29
http://msj.iau-arak.ac.ir/article_514437_b8788ad5b66ec51e6084ae07983eef81.pdf
Common fixed point theorems of
contractive mappings sequence in partially
ordered G-metric spaces
Leila
Gholizadeh
Department of Mathematics, Science and Research Branch, Islamic Azad
University(IAU), Tehran, Iran
author
text
article
2013
per
We consider the concept of Ω-distance on a complete partially ordered G-metric space and prove some common fixed point theorems.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
31
45
http://msj.iau-arak.ac.ir/article_514440_7dfaed38f82adf87f581c79d6bf77f88.pdf
The tanh method for solutions of the
nonlinear modied Korteweg de Vries
equation
Masoud
Karimi
Department of Mathematics, Bojnourd Branch, Islamic Azad University,
Bojnourd, Iran
author
text
article
2013
per
In this paper, we have studied on the solutions of modied KdV equation andalso on the stability of them. We use the tanh method for this investigationand given solutions are good-behavior. The solution is shock wave and can beused in the physical investigations
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
47
54
http://msj.iau-arak.ac.ir/article_514449_147fbdd56b84fcb044c570a333d66931.pdf
New solution of fuzzy linear matrix
equations
Mahmood
Otadi
Department of Mathematics, Firoozkooh Branch, Islamic Azad University,
Firoozkooh, Iran
author
text
article
2013
per
In this paper, a new method based on parametric form for approximate solu-tion of fuzzy linear matrix equations (FLMEs) of the form AX = B; where Ais a crisp matrix, B is a fuzzy number matrix and the unknown matrix X one,is presented. Then a numerical example is presented to illustrate the proposedmodel.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
55
66
http://msj.iau-arak.ac.ir/article_514450_2c134654159294fee620a7462396e580.pdf
Application of variational iteration method
for solving singular two point boundary
value problems
Mohsen
Rostamy-Malkhalifeh
Department of Mathematics, Science and Research Branch, Islamic Azad
University , Tehran 14515-775,Iran.
author
H.
Saleh
Islamic Azad University of Tehran
author
text
article
2013
per
DEA methodology allows DMUs to select the weights freely, so in the optimalsolution we may see many zeros in the optimal weight. to overcome this prob-lem, there are some methods, but they are not suitable for evaluating DMUswith fuzzy data. In this paper, we propose a new method for solving fuzzyDEA models with restricted multipliers with less computation, and comparethis method with Liu''''''''[11]. Finally, by the proposed method, we evaluate a ex-ible manufacturing system with little computation, and then we compared thecomputational complexity of our proposed method with that of liu''''''''s method.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
67
78
http://msj.iau-arak.ac.ir/article_514451_0e062f9808bc322fc78b4df7358ef021.pdf
Evaluating the solution for second kind
nonlinear Volterra Fredholm integral
equations using hybrid method
Ahamd
Shahsavaran
Islamic Azad University, Boroujerd Branch, Boroujerd, Iran.
author
Akbar
Shahsavaran
Islamic Azad University, Boroujerd Branch, Boroujerd, Iran.
author
text
article
2013
per
In this work, we present a computational method for solving second kindnonlinear Fredholm Volterra integral equations which is based on the use ofHaar wavelets. These functions together with the collocation method are thenutilized to reduce the Fredholm Volterra integral equations to the solution ofalgebraic equations. Finally, we also give some numerical examples that showsvalidity and applicability of the technique.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
79
93
http://msj.iau-arak.ac.ir/article_514452_fe2c8fd8c4e9403ca4dffb3ffa9c6ecd.pdf
Homological dimensions of complexes of
R-modules
N.
Tayarzadeh
Department of Mathematics, Islamic Azad University, Gachsaran branch,
Gachsaran, Iran.
author
Esmaiel
Hosseini
Department of Mathematics, Islamic Azad University, Gachsaran branch,
Gachsaran, Iran.
author
Sh.
Niknejad
Department of Mathematics, Islamic Azad University, Gachsaran Branch,
Gachsaran, Iran.
author
text
article
2013
per
Let R be an associative ring with identity, C(R) be the category of com-plexes of R-modules and Flat(C(R)) be the class of all at complexes of R-modules. We show that the at cotorsion theory (Flat(C(R)); Flat(C(R))−)have enough injectives in C(R). As an application, we prove that for each atcomplex F and each complex Y of R-modules, Exti (F,X)= 0, whenever Ris n-perfect and i > n.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
95
103
http://msj.iau-arak.ac.ir/article_514453_bb1bb8affb7bd085b0592682642ff05f.pdf
A note on positive deniteness and
stability of interval matrices
Hana
Veiseh
Department of Applied Mathematics, Hamedan Branch, Islamic Azad
University, Hamedan, Iran
author
text
article
2013
per
It is proved that by using bounds of eigenvalues of an interval matrix, someconditions for checking positive deniteness and stability of interval matricescan be presented. These conditions have been proved previously with variousmethods and now we provide some new proofs for them with a unity method.Furthermore we introduce a new necessary and sucient condition for checkingstability of interval matrices.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
105
113
http://msj.iau-arak.ac.ir/article_514454_931070a5b2c71d54ffa1b791fc25daab.pdf
A numerical solution of a Kawahara
equation by using Multiquadric radial basis
function
M.
Zarebnia
Department of Mathematics, University of mohaghegh Ardabili,
56199-11367, Ardabil, Iran.
author
M.
Takhti
Department of Mathematics, University of mohaghegh Ardabili,
56199-11367, Ardabil, Iran.
author
text
article
2013
per
In this article, we apply the Multiquadric radial basis function (RBF) interpo-lation method for nding the numerical approximation of traveling wave solu-tions of the Kawahara equation. The scheme is based on the Crank-Nicolsonformulation for space derivative. The performance of the method is shown innumerical examples.
Theory of Approximation and Applications
Islamic Azad University
2538-2217
9
v.
1
no.
2013
115
125
http://msj.iau-arak.ac.ir/article_514455_dd7fdc8d676a69dc1a71ef26a81a6454.pdf