Islamic Azad University, Central tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 Islamic Azad University, Central tehran Branch 331 unavailable COUPLED FIXED POINT THEOREMS FOR GENERALIZED Φ-MAPPINGS SATISFYING CONTRACTIVE CONDITION OF INTEGRAL TYPE ON CONE METRIC SPACES Olaleru J. O. University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department Okeke G. A. University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department Akewe H. University of Lagos, Lagos, Nigeria. Nigeria Mathematics Department 20 03 2016 2 2 (SPRING) 87 98 14 04 2016 14 04 2016 Copyright © 2016, Islamic Azad University, Central tehran Branch. 2016 http://ijm2c.iauctb.ac.ir/article_521789.html

In this paper, we unify, extend and generalize some results on coupled fixed point theorems of generalized φ- mappings with some applications to fixed points of integral type mappings in cone metric spaces.

generalized φ-pair mappings coupled fixed point complete cone metric spaces
Islamic Azad University, Central tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 Islamic Azad University, Central tehran Branch 331 unavailable PRODUCTION INVENTORY MODEL FOR DETERIORATING ITEMS WITH SHORTAGES AND SALVAGE VALUE UNDER REVERSE LOGISTICS Kumar Mishra V. B T kumaon Institute of Technology,Dwarahat, Almora,Uttarakhand, India India Computer Science, Assistant Professor 20 03 2016 2 2 (SPRING) 99 110 14 04 2016 14 04 2016 Copyright © 2016, Islamic Azad University, Central tehran Branch. 2016 http://ijm2c.iauctb.ac.ir/article_521790.html

In this paper, a production inventory model is developed for the business enterprise which consists of three wings. The first wing is for manufacturing new items, the second wing is for collecting the returned items, while third wing is for remanufacturing the returned item. In this model we consider the fact that the storage item is deteriorated during storage periods and salvage value is incorporated to the deteriorated items. The demand, deterioration, production, remanufacturing and return rates are time dependent. The shortages are allowed and fully backlogged. The model is solved analytically by minimizing the total inventory cost. The model can be applied for optimizing the total inventory cost of deteriorating items inventory under reverse logistic for a business enterprise where demand and deterioration both is function of time.

Inventory deteriorating items shortages time dependent deterioration salvage
Islamic Azad University, Central tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 Islamic Azad University, Central tehran Branch 331 unavailable COMPUTATIONAL RESULTS ON FINITE P-GROUPS OF EXPONENT P2 Ahmadi B. Mathematics Department, Science and Research Branch, Islamic Azad University, Tehran, Iran. Iran, Islamic Republic of Professor of Mathematics, Doostie H. Lecturer, Lahijan Islamic Azad University, Lahijan, Iran Iran, Islamic Republic of Lecturere, Ph.D. Student (at present). 20 03 2016 2 2 (SPRING) 111 120 14 04 2016 14 04 2016 Copyright © 2016, Islamic Azad University, Central tehran Branch. 2016 http://ijm2c.iauctb.ac.ir/article_521791.html

The Fibonacci lengths of the finite p-groups have been studied by R. Dikici and co-authors since 1992. All of the considered groups are of exponent p, and the lengths depend on the celebrated Wall number k(p). The study of p-groups of nilpotency class 3 and exponent p has been done in 2004 by R. Dikici as well. In this paper we study all of the p-groups of nilpotency class 3 and exponent p2. This completes the study of Fibonacci length of all \$p\$-groups of order p4, proving that the Fibonacci length is k(p2).

Fibonacci length \$p\$-groups Nilpotency class3
Islamic Azad University, Central tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 Islamic Azad University, Central tehran Branch 331 unavailable STUDYING THE BEHAVIOR OF SOLUTIONS OF A SECOND-ORDER RATIONAL DIFFERENCE EQUATION AND A RATIONAL SYSTEM Sohrabi Hesan S. University Of Tabriz,Tabriz Iran, Islamic Republic of Faculty of Mathematical Science Gholizade Atani Y. Hesan M. 20 03 2016 2 2 (SPRING) 121 125 14 04 2016 14 04 2016 Copyright © 2016, Islamic Azad University, Central tehran Branch. 2016 http://ijm2c.iauctb.ac.ir/article_521792.html

In this paper we investigate the behavior of solutions, stable and unstable of the solutions a second-order rational difference equation. Also we will discuss about the behavior of solutions a the rational system, we show these solutions may be stable or unstable.

Dierence equation Rational system Boundedness character Nonnegative
Islamic Azad University, Central tehran Branch International Journal of Mathematical Modelling & Computations 2228-6225 Islamic Azad University, Central tehran Branch 331 unavailable NUMERICAL SOLUTION OF INTEGRO-DIFFERENTIAL EQUATION BY USING CHEBYSHEV WAVELET OPERATIONAL MATRIX OF INTEGRATION Fariborzi Araghi M. A. Islamic Azad University, Central Tehran Branch, Iran Iran, Islamic Republic of Department of Mathematics Daliri S. Iran, Islamic Republic of Bahmanpour M. Department of Mathematics, Sama Technical and Vocational Training College, Islamic, Azad University, Khorasgan, Isfahan Branch, Iran. Iran, Islamic Republic of 20 03 2016 2 2 (SPRING) 127 136 14 04 2016 14 04 2016 Copyright © 2016, Islamic Azad University, Central tehran Branch. 2016 http://ijm2c.iauctb.ac.ir/article_521793.html

In this paper, we propose a method to approximate the solution of a linear Fredholm integro-differential equation by using the Chebyshev wavelet of the first kind as basis. For this purpose, we introduce the first Chebyshev operational matrix of integration. Chebyshev wavelet approximating method is then utilized to reduce the integro-differential equation to a system of algebraic equations. Illustrative examples are included to demonstrate the advantages and applicability of the technique.

Integro-differential equation Chebyshev wavelet of the first kind Operational matrix of integration Legendre wavelet CAS wavelet