ORIGINAL_ARTICLE
EXISTENCE OF PERIODIC SOLUTIONS IN TOTALLY NONLINEAR NEUTRAL DIFFERANCE EQUATIONS WITH VARIABLE DELAY
http://cjms.journals.umz.ac.ir/article_287_25302cc99192d5f15528d454589a4ff4.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
1
14
Fixed point
large contraction
periodic solutions
totally nonlinear neutral differential equations
A.
Ardjouni
abd_ardjouni@yahoo.fr
true
1
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
LEAD_AUTHOR
A.
Djoudi
true
2
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
Department of Mathematics, Faculty of Sciences, University of Annaba, P.O. Box 12
Annaba, Algeria
AUTHOR
ORIGINAL_ARTICLE
B-FOCAL CURVES OF BIHARMONIC B-GENERAL HELICES IN Heis
In this paper, we study B-focal curves of biharmonic B -general helices according to Bishop frame in the Heisenberg group Heis Finally, we characterize the B-focal curves of biharmonic B- general helices in terms of Bishop frame in the Heisenberg group Heis
http://cjms.journals.umz.ac.ir/article_426_2532ab9f6c4ad19ed8884a3d68866407.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
15
23
Biharmonic curve
Bishop frame
Heisenberg group
Parallel transport
Helix
T.
KÖRPINAR
talatkorpinar@gmail.com
true
1
Mus Alparslan University, Department of Mathematics
49250, Mus, TURKEY
Mus Alparslan University, Department of Mathematics
49250, Mus, TURKEY
Mus Alparslan University, Department of Mathematics
49250, Mus, TURKEY
LEAD_AUTHOR
E.
TURHAN
essin.turhan@gmail.com
true
2
Firat University, Department of Mathematics
23119, Elazig, TURKEY
Firat University, Department of Mathematics
23119, Elazig, TURKEY
Firat University, Department of Mathematics
23119, Elazig, TURKEY
AUTHOR
ORIGINAL_ARTICLE
Numerical solution of nonlinear Hammerstein integral equations by using Legendre-Bernstein basis
In this study a numerical method is developed to solve the Hammerstein integral equations. To this end the kernel has been approximated using the leastsquares approximation schemes based on Legender-Bernstein basis. The Legender polynomials are orthogonal and these properties improve the accuracy of the approximations. Also the nonlinear unknown function has been approximated by using the Bernstein basis. The useful properties of Bernstein polynomials help us to transform Hammerstein integral equation to solve a system of nonlinear algebraic equations.
http://cjms.journals.umz.ac.ir/article_477_9fe4fa2b02bfbf39e4a3749fea67fbd2.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
25
37
Nonlinear Hammerstein integral equations
Bernstein basis
Legendre basis
Orthogonal polynomials
F.
Mirzaee
fa_mirzaee@yahoo.com
true
1
Department of Mathematics, Faculty of Science, Malayer University
Department of Mathematics, Faculty of Science, Malayer University
Department of Mathematics, Faculty of Science, Malayer University
LEAD_AUTHOR
S.
Fathi
s@yahoo.com
true
2
Department of Mathematics, Faculty of Science, Malayer University
Department of Mathematics, Faculty of Science, Malayer University
Department of Mathematics, Faculty of Science, Malayer University
AUTHOR
ORIGINAL_ARTICLE
ψ-pseudomonotone generalized strong vector variational inequalities with application
In this paper, we establish an existence result of the solution for an generalized strong vector variational inequality already considered in the literature and as applications we obtain a new coincidence point theorem in Hilbert spaces.
http://cjms.journals.umz.ac.ir/article_485_faafffc5533e60965c05a5785ecebf95.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
39
45
Generalized strong vector variational inequality
-psedomonotone
Coincidence point
Nonexpansive mappings
A
Amini Harandi
a.amini@sci.ui.ac.ir
true
1
Department of Pure Mathematics, University of Shahrekord, Shahrekord, 88186-34141, Iran
Department of Pure Mathematics, University of Shahrekord, Shahrekord, 88186-34141, Iran
Department of Pure Mathematics, University of Shahrekord, Shahrekord, 88186-34141, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Vertex Removable Cycles of Graphs and Digraphs
In this paper we defined the vertex removable cycle in respect of the following, if $F$ is a class of graphs(digraphs) satisfying certain property, $G in F $, the cycle $C$ in $G$ is called vertex removable if $G-V(C)in in F $. The vertex removable cycles of eulerian graphs are studied. We also characterize the edge removable cycles of regular graphs(digraphs).
http://cjms.journals.umz.ac.ir/article_486_19839960a1aaed2f2a08003d87e3483e.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
47
55
Vertex removable cycle
connected graph
Eulerian graph and regular graph
A. B.
Attar
akramattar70@yahoo.com
true
1
University of Thi-qar
College of Education for Pure Sciences
University of Thi-qar
College of Education for Pure Sciences
University of Thi-qar
College of Education for Pure Sciences
LEAD_AUTHOR
A. A.
Sangoor
true
2
University of Thi-qar\
College of Education for Pure Sciences
University of Thi-qar\
College of Education for Pure Sciences
University of Thi-qar\
College of Education for Pure Sciences
AUTHOR
ORIGINAL_ARTICLE
Application of Daubechies wavelets for solving Kuramoto-Sivashinsky type equations
We show how Daubechies wavelets are used to solve Kuramoto-Sivashinsky type equations with periodic boundary condition. Wavelet bases are used for numerical solution of the Kuramoto-Sivashinsky type equations by Galerkin method. The numerical results in comparison with the exact solution prove the efficiency and accuracy of our method.
http://cjms.journals.umz.ac.ir/article_489_09003ad2b2c235b24b1d86b41dbc85e1.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
57
66
Daubechies wavelets
Connection coefficients
Kuramoto-Sivashinsky type equations
A.
Davari
a_davari@sci.ui.ac.ir
true
1
Department of Mathematics, University of Isfahan, Isfahan, Iran.
Department of Mathematics, University of Isfahan, Isfahan, Iran.
Department of Mathematics, University of Isfahan, Isfahan, Iran.
LEAD_AUTHOR
M.
Torabi
orabi.mina521@gmail.com
true
2
Department of Mathematics, University of Isfahan, Isfahan, Iran.
Department of Mathematics, University of Isfahan, Isfahan, Iran.
Department of Mathematics, University of Isfahan, Isfahan, Iran.
AUTHOR
ORIGINAL_ARTICLE
THIRD-ORDER AND FOURTH-ORDER ITERATIVE METHODS FREE FROM SECOND DERIVATIVE FOR FINDING MULTIPLE ROOTS OF NONLINEAR EQUATIONS
In this paper, we present two new families of third-order and fourth-order methods for finding multiple roots of nonlinear equations. Each of them requires one evaluation of the function and two of its first derivative per iteration. Several numerical examples are given to illustrate the performance of the presented methods.
http://cjms.journals.umz.ac.ir/article_492_1b9fbf2ca8662e25f3a6b0d5e7db4d04.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
67
85
Newtons method
Multiple roots
Iterative methods
Nonlinear equations
Order of
convergence
Root-finding
M.
Heydari
m.heydari85@gmail.com
true
1
Department of Mathematics,
Yazd University, Yazd-IRAN.
Department of Mathematics,
Yazd University, Yazd-IRAN.
Department of Mathematics,
Yazd University, Yazd-IRAN.
AUTHOR
G.B.
Loghmani
true
2
Yazd Univ
Yazd Univ
Yazd Univ
AUTHOR
ORIGINAL_ARTICLE
A RESULT ON FIXED POINTS FOR WEAKLY QUASI-CONTRACTION MAPS IN METRIC SPACES
In this paper, we give a new fixed point theorem forWeakly quasi-contraction maps in metric spaces. Our results extend and improve some fixed point and theorems in literature.
http://cjms.journals.umz.ac.ir/article_497_424997fe33dc1b4b3110d6be3364d9b4.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
87
90
Fixed points
Weakly quasi- contraction maps
F.
Kiany
kiany@iauahvaz.ac.ir
true
1
Faculty of Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Faculty of Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Faculty of Science, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Parallel Transport Frame in 4 -dimensional Euclidean Space
In this work, we give parallel transport frame of a curve and we introduce the relations between the frame and Frenet frame of the curve in 4-dimensional Euclidean space. The relation which is well known in Euclidean 3-space is generalized for the
rst time in 4-dimensional Euclidean space. Then we obtain the condition for spherical curves using the parallel transport frame of them. The condition in terms of { and is so complicated but in terms of k1 and k2 is simple. So, parallel transport frame is important to make easy some complicated characterizations. Moreover, we characterize curves whose position vectors lie in their nor- mal, rectifying and osculating planes in 4-dimensional Euclidean space E4:
http://cjms.journals.umz.ac.ir/article_498_73f8d022f61f4fd6d31bc0c4b0d8bfb2.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
91
103
Euclidean 4-space
Parallel transport frame
Bishop frame
Normal
curve
Rectifying curve
Osculating curve
F.
GÖKÇELIK
fgokcelik@ankara.edu.tr
true
1
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
LEAD_AUTHOR
Z.
BOZKURT
zbozkurt@ankara.edu.tr
true
2
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
AUTHOR
I.
GÖK
igok@science.ankara.edu.tr
true
3
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
AUTHOR
N.
EKMEKCI
ekmekci@science.ankara.edu.tr
true
4
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
AUTHOR
Y.
YAYLI
yyayli@science.ankara.edu.tr
true
5
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
Department of Mathematics, Faculty of Science, University of Ankara Tandogan,
Ankara, TURKEY
AUTHOR
ORIGINAL_ARTICLE
Modified Laplace Decomposition Method for Singular IVPs in the second-Order Ordinary Differential Equations
In this paper, we use modified Laplace decomposition method to solving initial value problems (IVP) of the second order ordinary differential equations. Theproposed method can be applied to linear and nonlinearproblems
http://cjms.journals.umz.ac.ir/article_502_22afc105cabcea4b795365e4413a3280.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
105
113
Singular initial value problems
Laplace decomposition method
Adomian decomposition method
M.
Mahmoudi
math.mahmoudi@yahoo.com
true
1
1Institute for Higher Education Pooyandegandanesh, Chalus, Iran
2Islamic Azad University, Nowshahr, Iran
1Institute for Higher Education Pooyandegandanesh, Chalus, Iran
2Islamic Azad University, Nowshahr, Iran
1Institute for Higher Education Pooyandegandanesh, Chalus, Iran
2Islamic Azad University, Nowshahr, Iran
LEAD_AUTHOR
H.
Jafari
true
2
Department of Mathematics, University of Mazandaran, Babolsar, Iran
Department of Mathematics, University of Mazandaran, Babolsar, Iran
Department of Mathematics, University of Mazandaran, Babolsar, Iran
AUTHOR
ORIGINAL_ARTICLE
On quasi-catenary modules
We call a module M , quasi-catenary if for each pair of quasi-prime submodules K and L of M with K L all saturated chains of quasi-prime submodules of M from K to L have a common finite length. We show that any homomorphic image of a quasi-catenary module is quasi-catenary. We prove that if M is a module with following properties: (i) Every quasi-prime submodule of M has finite quasi-height; (ii) For every pair of K L of quasi-prime submodules ofM, q−height(L/K ) = q− height(L) − q − height(K); then M is quasi-catenary.
http://cjms.journals.umz.ac.ir/article_504_a6e0beabc2cc7a5bb342ec847d81b29f.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
115
121
catenary module
quasi-prime submodule
quasi-catenary module
S.
Asgari
samira.asgari.a@gmail.com
true
1
Islamic Azad University, Mobarakeh Branch
Mobarakeh, Iran
samira.asgari.a@gmail.com
Islamic Azad University, Mobarakeh Branch
Mobarakeh, Iran
samira.asgari.a@gmail.com
Islamic Azad University, Mobarakeh Branch
Mobarakeh, Iran
samira.asgari.a@gmail.com
LEAD_AUTHOR
ORIGINAL_ARTICLE
A modification of Chebyshev-Halley method free from second derivatives for nonlinear equations
In this paper, we present a new modification of Chebyshev-Halley method, free from second derivatives, to solve nonlinear equations. The convergence analysis shows that our modification is third-order convergent. Every iteration of this method requires one function and two first derivative evaluations. So, its efficiency index is $3^{1/3}=1.442$ that is better than that of Newton method. Several numerical examples are given to illustrate the performance of the presented method.
http://cjms.journals.umz.ac.ir/article_514_c160a8d4b7e0a92911cd3b1d4faaaca0.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
123
130
Chebyshev-Halley method
Newton method
Nonlinear equations
Third-
order convergence
H.
Esmaeili
true
1
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
AUTHOR
M.
Rostami
m.rostami@basu.ac.ir
true
2
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
Department of Mathematics, Bu-Ali Sina University, Hamedan, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
The Stability of Some Systems of Harvested Lotka-Volterra Predator-Prey Equations
Some scientists are interesting to study in area of harvested ecological modelling. The harvested population dynamics is more realistic than other ecological models. In the present paper, some of the Lotka-Volterra predator-prey models have been considered. In the said models, existing species are harvested by constant or variable growth rates. The behavior of their solutions has been analyzed in the stability sense. The employed methods are linearization and Lyapunove function.
http://cjms.journals.umz.ac.ir/article_515_8976ae6d43ff79c22f8cafb9beeba1dd.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
131
139
Harvested Factor
Lotka-Volterra model
Lyapunove Function
Stability
M. H.
Rahmani Doust
mh.rahmanidoust@neyshabur.ac.ir
true
1
Department of Mathematics, University of Neyshabur, Neyshabur, Iran.
Department of Mathematics, University of Neyshabur, Neyshabur, Iran.
Department of Mathematics, University of Neyshabur, Neyshabur, Iran.
LEAD_AUTHOR
F.
Haghighifar
f.haghighifar@yahoo.com
true
2
Department of Mathematics, Qom University, Qom, Iran
Department of Mathematics, Qom University, Qom, Iran
Department of Mathematics, Qom University, Qom, Iran
AUTHOR
ORIGINAL_ARTICLE
Sufficient Conditions for Density in Extended Lipschitz Algebras
http://cjms.journals.umz.ac.ir/article_556_6a239a3405764d2b32544feae8b5e37e.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
141
151
Banach function algebra
Dense subspace
Extended Lipschitz algebra
Separation property
D.
Alimohammadi
d-alimohammadi@araku.ac.ir
true
1
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
LEAD_AUTHOR
S.
Moradi
s-moradi@araku.ac.ir
true
2
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
Department of Mathematics, Faculty of Science, Arak University,
Arak, 38156-8-8349, Iran
AUTHOR