en
jalali
1393
8
1
gregorian
2014
11
1
9
2
online
1
fulltext
en
On Generalized Coprime Graphs
Paul Erdos defined the concept of coprime graph and studied about cycles in coprime graphs. In this paper this concept is generalized and a new graph called Generalized coprime graph is introduced. Having observed certain basic properties of the new graph it is proved that the chromatic number and the clique number of some generalized coprime graphs are equal.
Coprime graph, Semi-perfect, Clique number, Chromatic number.
1
6
http://ijmsi.ir/browse.php?a_code=A-10-332-1&slc_lang=en&sid=1
S.
Mutharasu
Manonmaniam Sundaranar University
skannanmunna@yahoo.com
`0031947532846002289`

0031947532846002289
Yes
N.
Mohamed Rilwan
Manonmaniam Sundaranar University
rilwan2020@gmail.com
`0031947532846002290`

0031947532846002290
No
M. K.
Angel Jebitha
Manonmaniam Sundaranar University
angel_jebitha@yahoo.co.in
`0031947532846002291`

0031947532846002291
No
T.
Tamizh Chelvam
tamche59@gmail.com
`0031947532846002292`

0031947532846002292
No
en
Local Cohomology with Respect to a Cohomologically Complete Intersection Pair of Ideals
Let $(R,fm,k)$ be a local Gorenstein ring of dimension $n$. Let $H_{I,J}^i(R)$ be theĀ local cohomology with respect to a pair of ideals $I,J$ and $c$ be the $inf{i|H_{I,J}^i(R)neq0}$. A pair of ideals $I, J$ is called cohomologically complete intersection if $H_{I,J}^i(R)=0$ for all $ineq c$. It is shown that, when $H_{I,J}^i(R)=0$ for all $ineq c$, (i) a minimal injective resolution of $H_{I,J}^c(R)$ presents like that of a Gorenstein ring (ii) $Hom_R(H_{I,J}^c(R),H_{I,J}^c(R))simeq R$, where $(R,fm)$ is a complete ring. Also we get an estimate of theĀ dimension of $H_{I,J}^i(R)$.
Vanishing, Local cohomology, Gorenstein ring.
7
13
http://ijmsi.ir/browse.php?a_code=A-10-583-1&slc_lang=en&sid=1
A.
Pour Eshmanan Talemi
poureshmanan@iaurasht.ac.ir
`0031947532846002293`

0031947532846002293
Yes
A.
Tehranian
tehranian@srbiau.ac.ir
`0031947532846002294`

0031947532846002294
No
en
Strongly almost ideal convergent sequences in a locally convex space defined by Musielak-Orlicz function
In this article, we introduce a new class of ideal convergent sequence spaces using an infinite matrix, Musielak-Orlicz function and a new generalized difference matrix in locally convex spaces. We investigate some linear topological structures and algebraic properties of these spaces. We also give some relations related to these sequence spaces.
$I$-convergence, difference space, Musielak-Orlicz function.
15
35
http://ijmsi.ir/browse.php?a_code=A-10-499-2&slc_lang=en&sid=1
B.
Hazarika
Rajiv Gandhi University
bh_rgu@yahoo.co.in
`0031947532846002295`

0031947532846002295
Yes
en
The p-median and p-center Problems on Bipartite Graphs
Let $G$ be a bipartite graph. In this paper we consider the two kind of location problems namely $p$-center and $p$-median problems on bipartite graphs. The $p$-center and $p$-median problems asks to find a subset of vertices of cardinality $p$, so that respectively the maximum and sum of the distances from this set to all other vertices in $G$ is minimized. For each case we present some properties to find exact solutions.
Location theory, $p$-median, $p$-center, Bipartite graphs.
37
43
http://ijmsi.ir/browse.php?a_code=A-10-583-2&slc_lang=en&sid=1
J.
Fathali
fathali@shahroodut.ac.ir
`0031947532846002296`

0031947532846002296
Yes
N.
Jafari Rad
n.jafarirad@shahroodut.ac.ir
`0031947532846002297`

0031947532846002297
No
S.
Rahimi Sherbaf
srahimi@shahroodut.ac.ir
`0031947532846002298`

0031947532846002298
No
en
Chromaticity of Turan Graphs with At Most Three Edges Deleted
Let $P(G,lambda)$ be the chromatic polynomial of a graph $G$. A graph $G$ ischromatically unique if for any graph $H$, $P(H, lambda) = P(G,lambda)$ implies $H$ is isomorphic to $G$. In this paper, we determine the chromaticity of all Tur'{a}n graphs with at most three edges deleted. As a by product, we found many families of chromatically unique graphs and chromatic equivalence classes of graphs.
Chromatic polynomial, Chromatic uniqueness, Turan graph.
45
64
http://ijmsi.ir/browse.php?a_code=A-10-583-3&slc_lang=en&sid=1
G.-C.
Lau
laugc@johor.uitm.edu.my
`0031947532846002299`

0031947532846002299
No
Y.-H.
Peng
yhpeng@fsas.upm.edu.my
`0031947532846002300`

0031947532846002300
No
S.
Alikhani
alikhani@yazd.ac.ir
`0031947532846002301`

0031947532846002301
Yes
en
A Semidefinite Optimization Approach to Quadratic Fractional Optimization with a Strictly Convex Quadratic Constraint
In this paper we consider a fractional optimization problem that minimizes the ratio of two quadratic functions subject to a strictly convex quadratic constraint. First using the extension of Charnes-Cooper transformation, an equivalent homogenized quadratic reformulation of the problem is given. Then we show that under certain assumptions, it can be solved to global optimality using semidefinite optimization relaxation in polynomial time.
Quadratic fractional optimization, Semidefinite optimization relaxation, Global optimization.
65
71
http://ijmsi.ir/browse.php?a_code=A-10-583-4&slc_lang=en&sid=1
M.
Salahi
salahim@guilan.ac.ir
`0031947532846002302`

0031947532846002302
Yes
S.
Fallahi
saeedf808@gmail.com
`0031947532846002303`

0031947532846002303
No
en
On Some Fractional Systems of Difference Equations
This paper deal with the solutions of the systems of difference equations $$x_{n+1}=frac{y_{n-3}y_nx_{n-2}}{y_{n-3}x_{n-2}pm y_{n-3}y_n pm y_nx_{n-2}}, ,y_{n+1}=frac{y_{n-2}x_{n-1}}{ 2y_{n-2}pm x_{n-1}},,nin mathbb{N}_{0},$$ where $mathbb{N}_{0}=mathbb{N}cup left{0right}$, and initial values $x_{-2},, x_{-1},,x_{0},,y_{-3},,y_{-2},,y_{-1},,y_{0}$ are non-zero real numbers.
System of difference equations, Form of the solutions, Periodicity.
73
86
http://ijmsi.ir/browse.php?a_code=A-10-634-1&slc_lang=en&sid=1
N.
Touafek
Jijel University
nouressadat_touafek@yahoo.com
`0031947532846002304`

0031947532846002304
Yes
en
Some Results on Convexity and Concavity of Multivariate Copulas
This paper provides some results on different types of convexity and concavity in the class of multivariate copulas. We also study their properties and provide several examples to illustrate our results.
Componentwise concavity, Copula, Quasi-concavity, Schur-concavity.
87
100
http://ijmsi.ir/browse.php?a_code=A-10-583-5&slc_lang=en&sid=1
A.
Dolati
adolati@yazd.ac.ir
`0031947532846002305`

0031947532846002305
No
A.
Dehgan Nezhad
anezhad@yazd.ac.ir
`0031947532846002306`

0031947532846002306
Yes
en
Application of the Norm Estimates for Univalence of Analytic Functions
By using norm estimates of the pre-Schwarzian derivatives for certain family of analytic functions, we shall give simple sufficient conditions for univalence of analytic functions.
Starlike functions, Differential subordination, Integral operators.
101
108
http://ijmsi.ir/browse.php?a_code=A-10-407-1&slc_lang=en&sid=1
R.
Aghalary
`0031947532846002307`

0031947532846002307
Yes
en
On the Ultramean Construction
We use the ultramean construction to prove linear compactness theorem. We also extend the Rudin-Keisler ordering to maximal probability charges and characterize it by embeddings of power ultrameans.
Continuous logic, Ultramean, Linear compactness, Rudin-Keisler ordering.
109
119
http://ijmsi.ir/browse.php?a_code=A-10-430-1&slc_lang=en&sid=1
M.
Bagheri
Tarbiat-Modares
bagheri@modares.ac.ir
`0031947532846002308`

0031947532846002308
Yes
en
ABSTRACTS IN PERSIAN - Vol. 9, No. 2
Please see the full text contains the Pesian abstracts for this volume.
121
131
http://ijmsi.ir/browse.php?a_code=A-10-583-11&slc_lang=en&sid=1
Name of Authors
in This Volume
`0031947532846002486`

0031947532846002486
Yes