ORIGINAL_ARTICLE
On Rad-H-supplemented Modules
Let M be a right R-module. We call M Rad-H-supplemented iffor each Y M there exists a direct summand D of M such that(Y + D)/D (Rad(M) + D)/D and (Y + D)/Y (Rad(M) + Y )/Y .It is shown that:(1) Let M = M1M2, where M1 is a fully invariant submodule of M.If M is Rad-H-supplemented, thenM1 andM2 are Rad-H-supplemented.(2) Let M = M1 M2 be a duo module and Rad--supplemented. IfM1 is radical M2-sejective (or M2 is radical M1-sejective), then M isRad-H-supplemented. (3) Let M = ni=1Mi be a finite direct sum ofmodules. If Mi is generalized radical Mj-projective for all j > i andeach Mi is Rad-H-supplemented, then M is Rad-H-supplemented.
http://cjms.journals.umz.ac.ir/article_634_19015ac8516cebdfd0888a1fdf2cbd43.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
1
9
Rad-H-supplemented module
FI − P − module
Rad-H-cofinitely
supplemented module
Y.
Talebi
talebi@umz.ac.ir
true
1
Department of Mathematics, University of Mazandaran, Babolsar, Iran
Department of Mathematics, University of Mazandaran, Babolsar, Iran
Department of Mathematics, University of Mazandaran, Babolsar, Iran
LEAD_AUTHOR
M.
Mirkarim
mirkarim@umz.ac.ir
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
Positive solutions for nonlinear systems of third-order generalized sturm-liouville boundary value problems with $(p_1,p_2,ldots,p_n)$-laplacian
In this work, byemploying the Leggett-Williams fixed point theorem, we study theexistence of at least three positive solutions of boundary valueproblems for system of third-order ordinary differential equationswith $(p_1,p_2,ldots,p_n)$-Laplacianbegin{eqnarray*}left { begin{array}{ll} (phi_{p_i}(u_i''(t)))' + a_i(t) f_i(t,u_1(t), u_2(t), ldots, u_n(t)) =0 hspace{1cm} 0 leq t leq 1, alpha_i u_i(0) - beta_i u_i'(0) = mu_{i1} u_i(xi_i),hspace{0.2cm} gamma_i u_i(1) + delta_i u_i'(1) = mu_{i2} u_i(eta_i), hspace{0.5cm} u_i''(0) = 0,end{array} right.end{eqnarray*}where $ phi_{p_i}(s) = |s|^{p_i-2}s,$, are $p_i$-Laplacianoperators, $p_i > 1, 0 < xi_i < 1, 0 < eta_i < 1$ and $mu_{i1},mu_{i2}> 0$ for $i = 1,2, ldots,n$.
http://cjms.journals.umz.ac.ir/article_641_786f4bb727a4ba626525c2c282c98351.pdf
2013-07-01T11:23:20
2018-11-20T11:23:20
11
21
Positive solution
Third-order
ordinary differential equation
Fixed point theorem,
$(p_1,p_2,ldots,p_n)$-Laplacian
M.
Alimohammady
amohsen@umz.ac.ir
true
1
Dept of Math. Univ of Mazandaran University
Dept of Math. Univ of Mazandaran University
Dept of Math. Univ of Mazandaran University
AUTHOR
N.
Nyamoradi
nyamoradi@razi.ac.ir
true
2
Department of Mathematics, Faculty of Sciences Razi University,
67149 Kermanshah, Iran
Department of Mathematics, Faculty of Sciences Razi University,
67149 Kermanshah, Iran
Department of Mathematics, Faculty of Sciences Razi University,
67149 Kermanshah, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
INEXTENSIBLE FLOWS OF CURVES IN LIE GROUPS
In this paper, we study inextensible ows in three dimensional Lie groups with a bi-invariant metric. The necessary and sucient conditions for inextensible curve ow are expressed as a partial dierential equation involving the curvatures. Also, we give some results for special cases of Lie groups.
http://cjms.journals.umz.ac.ir/article_635_dd58d62bef35821c39e5b2587a0f0b46.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
23
32
G.
Yildiz
true
1
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
AUTHOR
O. Z.
Okuyucu
osman.okuyucu@bilecik.edu.tr
true
2
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
Department of Mathematics, University of Bilecik Seyh Edebali,
Bilecik, Turkey
LEAD_AUTHOR
ORIGINAL_ARTICLE
$C_4$-free zero-divisor graphs
In this paper we give a characterization for all commutative rings with $1$ whose zero-divisor graphs are $C_4$-free.
http://cjms.journals.umz.ac.ir/article_636_9a3adc03ecba9b95498d3fbae3874450.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
33
38
Zero-divisor graph
Bipartite graph
S. H.
Jafari
shjafri55@gmail.com
true
1
Department of Mathematics, University of Shahrood, Shahrood, Iran
Department of Mathematics, University of Shahrood, Shahrood, Iran
Department of Mathematics, University of Shahrood, Shahrood, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
T-Rough Sets Based on the Lattices
The aim of this paper is to introduce and study set- valued homomorphism on lattices and T-rough lattice with respect to a sublattice. This paper deals with T-rough set approach on the lattice theory. The result of this study contributes to, T-rough fuzzy set and approximation theory and proved in several papers. Keywords: approximation space; lattice; prime ideal; rough ideal; T-rough set; set-valued homomorphism; T-rough fuzzy ideal
http://cjms.journals.umz.ac.ir/article_652_d0e3286520c83cd72db88ebfee662fad.pdf
2014-07-01T11:23:20
2018-11-20T11:23:20
39
53
approximation space
lattice
prime ideal
rough ideal
T-rough set
set-valued homomorphism
T-rough fuzzy ideal
S.B.
Hosseini
true
1
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
LEAD_AUTHOR
E.
Hosseinpour
true
2
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
Department of Mathematics, Sari Branch, Islamic Azad University,
Sari, Iran.
AUTHOR
ORIGINAL_ARTICLE
Fixed point approach to the Hyers-Ulam-Rassias approximation of homomorphisms and derivations on Non-Archimedean random Lie $C^*$-algebras
In this paper, using fixed point method, we prove the generalized Hyers-Ulam stability of random homomorphisms in random $C^*$-algebras and random Lie $C^*$-algebras and of derivations on Non-Archimedean random C$^*$-algebras and Non-Archimedean random Lie C$^*$-algebras for the following $m$-variable additive functional equation: $$sum_{i=1}^m f(x_i)=frac{1}{2m}left[sum_{i=1}^mfleft( m x_i + sum_{j=1~,ineq j}^m x_jright)+fleft(sum_{i=1}^m x_iright) right]$$ The concept of Hyers-Ulam-Rassias stability originated from Th. M. Rassias� stability theorem that appeared in his paper: On the stability of the linear mapping in Banach spaces, Proc. Amer. Math. Soc. 72 (1978), 297-300.
http://cjms.journals.umz.ac.ir/article_638_5358565242dc84e81bdca50fa4e13602.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
55
66
Additive functional equation
fixed point
Non-Archimedean random space
homomorphism
in $C^*$-algebras and Lie $C^*$-algebras
generalized Hyers-Ulam stability
derivation on $C^*$-algebras and Lie $C^*$-algebras
H.
Azadi Kenary
h.azadikenary@gmail.com
true
1
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
LEAD_AUTHOR
A.
Toorani
a.toorani@yahoo.com
true
2
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
AUTHOR
A.
Heidarzadegan
a.heidarzadegan@yahoo.com
true
3
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
Department of Mathematics, Beyza Branch, Islamic Azad
University, Beyza, Iran.
AUTHOR
ORIGINAL_ARTICLE
On the existence of nonnegative solutions for a class of fractional boundary value problems
In this paper, we provide sufficient conditions for the existence of nonnegative solutions of a boundary value problem for a fractional order differential equation. By applying Kranoselskii`s fixed--point theorem in a cone, first we prove the existence of solutions of an auxiliary BVP formulated by truncating the response function. Then the Arzela--Ascoli theorem is used to take $C^1$ limits of sequences of such solutions.
http://cjms.journals.umz.ac.ir/article_639_b4de0fd10771631ea8ca45346527e5d9.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
67
76
Boundary value problem
Nonnegative solutions
Caputo fractional derivative
Equicontinuous sets
A.
Babakhani
babakhani@nit.ac.ir
true
1
Department of Mathematics, Faculty of Basic Science University of
Technology, 47148-71167, Iran
Department of Mathematics, Faculty of Basic Science University of
Technology, 47148-71167, Iran
Department of Mathematics, Faculty of Basic Science University of
Technology, 47148-71167, Iran
LEAD_AUTHOR
ORIGINAL_ARTICLE
Solving a System of Linear Equations by Homotopy Analysis Method
In this paper, an efficient algorithm for solving a system of linear equations based on the homotopy analysis method is presented. The proposed method is compared with the classical Jacobi iterative method, and the convergence analysis is discussed. Finally, two numerical examples are presented to show the effectiveness of the proposed method.
http://cjms.journals.umz.ac.ir/article_640_9790af813eec2a3985ab20e919b2aeb5.pdf
2014-06-30T11:23:20
2018-11-20T11:23:20
77
84
Homotopy analysis method
System of Linear Equations
Jacobi iterative
method
M.
Bayat
baayyaatt@gmail.com
true
1
Department of Mathematics, Zanjan Branch, Islamic Azad
University, Zanjan, Iran
Department of Mathematics, Zanjan Branch, Islamic Azad
University, Zanjan, Iran
Department of Mathematics, Zanjan Branch, Islamic Azad
University, Zanjan, Iran
LEAD_AUTHOR
Z.
Khatami
zkhatami11@yahoo.com
true
2
Department of Mathematics, Zanjan University, Zanjan, Iran
Department of Mathematics, Zanjan University, Zanjan, Iran
Department of Mathematics, Zanjan University, Zanjan, Iran
AUTHOR