University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
10
01
The Uniqueness of a Certain Type of Subdirect Product
62
76
EN
Hossain
Khabazian
Isfahan University of Technology, Isfahan, Iran
khabaz@cc.iut.ac.ir
10.22080/cjms.2017.1650
We introduce the "$type{lffs}$ subdirect product" and show that every ring is uniquely a $type{lffs}$ subdirect product of a family of $simple{basicls}$ rings. Also we show some applications.
$type{lffs}$ subdirect product,$basicls$ideal,$simple{basicls}$,$semip{raiz}$
http://cjms.journals.umz.ac.ir/article_1650.html
http://cjms.journals.umz.ac.ir/article_1650_255bc3fc9754af247dbd2c144deafd69.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
07
01
Collocation Method using Compactly Supported Radial Basis Function for Solving Volterra's Population Model
77
86
EN
Kourosh
Parand
Department of Computer Sciences, Shahid Beheshti University, G.C. Tehran 1969764166, Iran
gaslakh@gmail.com
Mohammad
Hemami
Department of Computer Sciences, Shahid Beheshti University, G.C. Tehran 1969764166, Iran
mohammadhemami@yahoo.com
10.22080/cjms.2017.1695
In this paper, indirect collocation approach based on compactly supported radial basis function (CSRBF) is applied for solving Volterra's population model. The method reduces the solution of this problem to the solution of a system of algebraic equations. Volterra's model is a nonlinear integrodifferential equation where the integral term represents the effect of toxin. To solve the problem, we use the wellknown CSRBF: $Wendland_{3,5}$. Numerical results and residual norm ($R(t)^2$) show good accuracy and rate of convergence.
Volterra's population model,Compact support radial basis functions,Collocation method
http://cjms.journals.umz.ac.ir/article_1695.html
http://cjms.journals.umz.ac.ir/article_1695_26793e06bf2dbb23c048f67e9e8200c9.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
07
01
Vector Valued multiple of $chi^{2}$ over $p$metric sequence spaces defined by Musielak
87
98
EN
Vandana

Department of Management Studies, Indian Institute of Technology, Madras, Chennai 600 036, Tamil Nadu, India. email: vdrai1988@gmail.com
vdrai1988@gmail.com
Deepamala

Mathematics Discipline, PDPM Indian Institute of Information Technology, Design and Manufacturing, Jabalpur, P.O.: Khamaria, Jabalpur 482 005, Madhya Pradesh, India. , email: dmrai23@gmail.com
dmrai23@gmail.com
N.
Subramanian
Department of Mathematics, SASTRA University, Thanjavur613 401, India, email: nsmaths@yahoo.com
nsmaths@yahoo.com
Lakshmi
Mishra
Dept. of Math., Lovely Prof. Univ. JalandharDelhi G.T. Road, Phagwara, Punjab 144 411, India, L.1627 Awadh Puri Colony Beniganj, PhaseIII, OppositeIndustrial Training Institute (I.T.I.), Ayodhya Main Road Faizabad 224 001,
lakshminarayanmishra04@gmail.com
10.22080/cjms.2017.1327
In this article, we define the vector valued multiple of $chi^{2}$ over $p$metric sequence spaces defined by Musielak and study some of their topological properties and some inclusion results.
analytic sequence,double sequences,$chi^{2}$ space,Musielak  modulus function,$p$ metric space
http://cjms.journals.umz.ac.ir/article_1327.html
http://cjms.journals.umz.ac.ir/article_1327_8815629c927cb0e235be19659f698774.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
07
01
Some points on generalized open sets
99
106
EN
Shyamapada
Modak
University of Gour Banga, India
spmodak2000@yahoo.co.in
10.22080/cjms.2017.1651
The paper is an attempt to represent a study of limit points, boundary points, exterior points, border, interior points and closure points in the common generalized topological space. This paper takes a look at the possibilities of an extended topological space and it also considers the new characterizations of dense set.
Limit point,Boundary point,Border,Exterior point,Dense set
http://cjms.journals.umz.ac.ir/article_1651.html
http://cjms.journals.umz.ac.ir/article_1651_d0a22adef112fdd17bec63336f5f1ca2.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2023
04
10
Inverse problem for SturmLiouville operators with a transmission and parameter dependent boundary conditions
107
119
EN
Mohammad
Shahriari
{Department of Mathematics}, {Faculty of Science}, {University of Maragheh,} {MaraghehIran.}
shahriari@tabrizu.ac.ir
Ali Asghar
Jodayree Akbarfam
akbarfam@yahoo.com
10.22080/cjms.2017.1653
In this manuscript, we consider the inverse problem for non selfadjoint SturmLiouville operator $D^2+q$ with eigenparameter dependent boundary and discontinuity conditions inside a finite closed interval. We prove by defining a new Hilbert space and using spectral data of a kind, the potential function can be uniquely determined by a set of value of eigenfunctions at an interior point and part of two sets of eigenvalues.
Inverse SturmLiouville equation,Non selfadjoint operator,Jump condition,Hilbert space
http://cjms.journals.umz.ac.ir/article_1653.html
http://cjms.journals.umz.ac.ir/article_1653_b708a58a5c9e4864bab276bddea24e98.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
07
01
VM Consolidation by using Selection and Placement of VMs in Cloud Datacenters
120
130
EN
Reza
Nadimi
nadimi@umz.ac.ir
Reza
Ahmadi Khatir
Department of Computer Sciences, Faculty of Mathematics, University of Mazandaran.
r_khatir865@yahoo.com
10.22080/cjms.2017.1697
The Cloud Computing model leverages virtualization of computing resources allowing customers to provision resources ondemand on a payasyougo basis. During recent years, the power consumption of datacenters in cloud environment attracted researchers. Optimization of energy consumption can be performed by different methods including virtual machine (VM) consolidation. This technique can reduce energy consumption by preventing of wasting them. Also, VM migration can provide opportunity to reduce energy consumption. In this article, we want to study different methods and policies to select and place VMs and migration algorithms for underutilized and overutilized servers in order to reduce energy consumption and SLA violation. We offer general and comprehensive framework on optimization of VM consolidation as its owchart and at last, suggest combined idea to detect underloaded and overloaded hosts and also VM selection and VM placement policies.
Cloud Computing,VM Consolidation,Energy Eff ciency,Cloud Datacenter
http://cjms.journals.umz.ac.ir/article_1697.html
http://cjms.journals.umz.ac.ir/article_1697_829b9ef4534d3c6b07c72a20555698fd.pdf
University of Mazandaran
Caspian Journal of Mathematical Sciences (CJMS)
17350611
6
2
2017
07
01
Generalized Helices and Singular Points
131
142
EN
Seher
kaya
Ankara,Turkey
seherkaya@ankara.edu.tr
Yusuf
Yaylı
Ankara University
Department of Mathematics,
06100, Ankara, Turkey
yayli@science.ankara.edu.tr
10.22080/cjms.2017.1665
In this paper, we define Xslant helix in Euclidean 3space and we obtain helix, slant helix, clad and gclad helix as special case of the Xslant helix. Then we study Darboux, tangential darboux developable surfaces and their singular points. Especially we show that the striction lines of these surfaces are singular locus of the surfaces.
Slant helices,clad and gclad helices,Darboux surface,striction line
http://cjms.journals.umz.ac.ir/article_1665.html
http://cjms.journals.umz.ac.ir/article_1665_36a9be3898c4c4c2d3b877debadb54c8.pdf