2019-05-20T14:08:39Z
http://cjms.journals.umz.ac.ir/?_action=export&rf=summon&issue=339
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Numerical solution of higher index DAEs using their IAE's structure: Trajectory-prescribed path control problem and simple pendulum
Gholamreza
Karamali
Babak
Shiri
In this paper, we solve higher index differential algebraic equations (DAEs) by transforming them into integral algebraic equations (IAEs). We apply collocation methods on continuous piece-wise polynomials space to solve the obtained higher index IAEs. The efficiency of the given method is improved by using a recursive formula for computing the integral part. Finally, we apply the obtained algorithm to solve a trajectory-prescribed path control problem and a model of simple pendulum. The numerical experiments show efficiency of the given techniques.
Differential algebraic equations
integral algebraic equations
trajectory-prescribed path control problem
simple pendulum
continuous piecewise collocation methods
2018
04
01
1
15
http://cjms.journals.umz.ac.ir/article_1699_d3e43912fc1e4f9bc92d5578341aa639.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
A New Method for Computing Determinants By Reducing The Orders By Two
Hossein
Faal
Morteza
Bayat
In this paper we will present a new method to calculate determinants of square matrices. The method is based on the Chio-Dodgson's condensation formula and our approach automatically affects in reducing the order of determinants by two. Also, using the Chio's condensation method we present an inductive proof of Dodgson's determinantal identity.
Chio's condensation Method
Dodgson's Condensation Method
determinants
determinantal identity
Laplace expansion
2018
04
01
16
24
http://cjms.journals.umz.ac.ir/article_1701_add4a3a457e1fe68510955297f333a40.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Bounds on First Reformulated Zagreb Index of Graph
K
Pattabiraman
A
Santhakumar
The first reformulated Zagreb index $EM_1(G)$ of a simple graph $G$ is defined as the sum of the terms $(d_u+d_v-2)^2$ over all edges $uv$ of $G .$ In this paper, the various upper and lower bounds for the first reformulated Zagreb index of a connected graph interms of other topological indices are obtained.
Topological index
Zagreb index
reformulated Zagreb index
2018
04
01
25
35
http://cjms.journals.umz.ac.ir/article_1716_6f789ebd7572066d3e0a5fd9a4df2328.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
On the Quaternionic Curves in the Semi-Euclidean Space E_4_2
Mehmet
GÜNGÖR
Tulay
Erisir
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.
Semi-real quaternionic involute-evolute curve
Semi-real quaternion
Semi-quaternionic space
2018
04
01
36
45
http://cjms.journals.umz.ac.ir/article_1667_4c7ec1abae5e7956d06cb5d07fd0a742.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Broadcast Routing in Wireless Ad-Hoc Networks: A Particle Swarm optimization Approach
Ahmad
Moradi
While routing in multi-hop packet radio networks (static Ad-hoc wireless networks), it is crucial to minimize power consumption since nodes are powered by batteries of limited capacity and it is expensive to recharge the device. This paper studies the problem of broadcast routing in radio networks. Given a network with an identified source node, any broadcast routing is considered as a directed tree rooted at the source node and spans all nodes. Since the problem is known to be NP-Hard, we try to tackle it heuristically. First we propose an efficient Particle Swarm Optimization (PSO) based algorithm with a proper coding schema. Then we present the second algorithm which combines the global search of the first algorithm with a local search strategy based on noising methods. Comprehensive experimental study is devoted to compare the behavior of the algorithms and to show its priority over the best known previous esults.
Particle Swarm Optimization
Broadcast Routing
Wireless Ad Hoc Network
Noising method
2018
04
01
46
67
http://cjms.journals.umz.ac.ir/article_1718_1a23141ac1600b34bb76e5958d326225.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Solving Inverse Sturm-Liouville Problems with Transmission Conditions on Two Disjoint Intervals
Seyfollah
Mosazadeh
In the present paper, some spectral properties of boundary value problems of Sturm-Liouville type on two disjoint bounded intervals with transmission boundary conditions are investigated. Uniqueness theorems for the solution of the inverse problem are proved, then we study the reconstructing of the coefficients of the Sturm-Liouville problem by the spectrtal mappings method.
Inverse Sturm-Liouville problem
Asymptotic behavior
Transmission conditions
Weyl-Titchmarsh $m$-function
Spectrtal mappings method
2018
04
01
68
79
http://cjms.journals.umz.ac.ir/article_1717_b572a927b2e312022f576a2c5d2c0472.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Growth Properties of the Cherednik-Opdam Transform in the Space Lp
Salah
El ouadih
Radouan
Daher
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 $L^{p}_{alpha,beta}(mathbb{R})$.
Cherednik-Opdam operator
Cherednik-Opdam transform
Generalized translation
2018
04
01
80
87
http://cjms.journals.umz.ac.ir/article_1666_7a937081522ddb1c1de650994978e8f7.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
Using shifted Legendre scaling functions for solving fractional biochemical reaction problem
Haman
Deilami Azodi
In this paper, biochemical reaction problem is given in the form of a system of non-linear differential equations involving Caputo fractional derivative. The aim is to suggest an instrumental scheme to approximate the solution of this problem. To achieve this goal, the fractional derivation terms are expanded as the elements of shifted Legendre scaling functions. Then, applying operational matrix of fractional integration and collocation technique, the main problem is transformed to a set of non-linear algebraic equations. This obtained algebraic system can be solved by available standard iterative procedures. Numerical results of applying the proposed method are investigated in details
Legendre scaling functions
Fractional biochemical reaction problem
Caputo derivative
Collocation method
2018
04
01
88
101
http://cjms.journals.umz.ac.ir/article_1782_8cbc1554b05487a5469c240b9255e8ab.pdf
Caspian Journal of Mathematical Sciences (CJMS)
CJMS
1735-0611
1735-0611
2018
7
1
An effective method for approximating the solution of singular integral equations with Cauchy kernel type
Ahmad
Shahsavaran
Mahmood
Paripour
In present paper, a numerical approach for solving Cauchy type singular integral equations is discussed. Lagrange interpolation with Gauss Legendre quadrature nodes and Taylor series expansion are utilized to reduce the computation of integral equations into some algebraic equations. Finally, five examples with exact solution are given to show efficiency and applicability of the method. Also, we give the maximum of computed absolute errors for some examples.
Singular integral equation
Cauchy kernel
Lagrange interpolation
Taylor series expansion
Gauss Legendre
2018
04
01
102
112
http://cjms.journals.umz.ac.ir/article_1700_fc769e08ba66a8122f8eff18f84976e8.pdf