Caspian Journal of Mathematical Sciences (CJMS)Caspian Journal of Mathematical Sciences (CJMS)
http://cjms.journals.umz.ac.ir/
Wed, 13 Dec 2017 12:32:08 +0100FeedCreatorCaspian Journal of Mathematical Sciences (CJMS)
http://cjms.journals.umz.ac.ir/
Feed provided by Caspian Journal of Mathematical Sciences (CJMS). Click to visit.The Uniqueness of a Certain Type of Subdirect Product
http://cjms.journals.umz.ac.ir/article_1650_302.html
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.Sat, 30 Sep 2017 20:30:00 +0100Multi-step conformable fractional differential transform method for solving and stability of ...
http://cjms.journals.umz.ac.ir/article_1649_0.html
In this article‎, ‎the multi-step conformable fractional differential transform method (MSCDTM) is applied to give approximate solutions of the conformable fractional-order differential systems‎. ‎Moreover‎, ‎we check the stability of conformable fractional-order L"{u} system with the MSCDTM to demonstrate the efficiency and effectiveness of the proposed procedure.Fri, 30 Jun 2017 19:30:00 +0100Growth Properties of the Cherednik-Opdam Transform in the Space Lp
http://cjms.journals.umz.ac.ir/article_1666_0.html
‎In this paper‎, ‎using a generalized translation operator‎, ‎we obtain a generalization of Younis Theorem 5.2 in [3] for the Cherednik-Opdam transform for functions satisfying the $(delta,gamma,p)$-Cherednik-Opdam Lipschitz condition in the space‎ ‎$L^{p}_{alpha,beta}(mathbb{R})$.Wed, 29 Nov 2017 20:30:00 +0100Collocation Method using Compactly Supported Radial Basis Function for Solving Volterra's ...
http://cjms.journals.umz.ac.ir/article_1695_302.html
‎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 non-linear integro-differential equation where the integral term represents the effect of toxin‎. ‎To solve the problem‎, ‎we use the well-known CSRBF‎: ‎$Wendland_{3,5}$‎. ‎Numerical results and residual norm ($|R(t)|^2$) show good accuracy and rate of convergence‎.Fri, 30 Jun 2017 19:30:00 +0100Vector Valued multiple of $chi^{2}$ over $p-$ metric sequence spaces defined by Musielak
http://cjms.journals.umz.ac.ir/article_1327_302.html
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.Fri, 30 Jun 2017 19:30:00 +0100Application of Daubechies wavelets for solving Kuramoto-Sivashinsky type equations
http://cjms.journals.umz.ac.ir/article_1668_0.html
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.Wed, 29 Nov 2017 20:30:00 +0100Some points on generalized open sets
http://cjms.journals.umz.ac.ir/article_1651_302.html
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.Fri, 30 Jun 2017 19:30:00 +0100On the Quaternionic Curves in the Semi-Euclidean Space E_4_2
http://cjms.journals.umz.ac.ir/article_1667_0.html
In this study, we investigate the semi-real quaternionic curves in the semi-Euclidean space E_4_2. Firstly, we introduce algebraic properties of semi-real quaternions. Then, we give some characterizations of semi-real quaternionic involute-evolute curves in the semi-Euclidean space E42 . Finally, we give an example illustrated with Mathematica Programme.Wed, 29 Nov 2017 20:30:00 +0100Inverse problem for Sturm-Liouville operators with a transmission and parameter dependent ...
http://cjms.journals.umz.ac.ir/article_1653_302.html
n this manuscript, we consider the inverse problem for non self-adjoint Sturm--Liouville 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.Fri, 30 Jun 2017 19:30:00 +0100Differential Transform Method to two-dimensional non-linear wave equation
http://cjms.journals.umz.ac.ir/article_1633_0.html
In this paper, an analytic solution is presented using differential transform method (DTM) for a class of wave equation. The emphasis is on the nonlinear two-dimensional wave equation. The procedures introduced in this paper are in recursive forms which can be used to obtain the closed form of the solutions, if they are required. The method is tested on various examples, and the results reveal the effectiveness and simplicity of the method.Fri, 30 Sep 2016 20:30:00 +0100VM Consolidation by using Selection and Placement of VMs in Cloud Datacenters
http://cjms.journals.umz.ac.ir/article_1697_302.html
The Cloud Computing model leverages virtualization of computing resources allowing customers to provision resources on-demand on a pay-as-you-go 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 dif-ferent methods and policies to select and place VMs and migration algorithms for underutilized and over-utilized 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.Fri, 30 Jun 2017 19:30:00 +0100Generalized Helices and Singular Points
http://cjms.journals.umz.ac.ir/article_1665_302.html
In this paper, we define X-slant helix in Euclidean 3-space and we obtain helix, slant helix, clad and g-clad helix as special case of the X-slant 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.Fri, 30 Jun 2017 19:30:00 +0100