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ISSN: 0373-3505    frecuency : 4   format : Electrónica

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Volume 68 Number 1 Year 2013

17 articles in this issue 

Hiep Tuan Dang

In this paper we study on division algorithm and Gröbner bases in the multivariate quaternionic polynomial ring.

Pags. 3 - 11  

Chrysi G. Kokologiannaki, Valmir Krasniqi

We give completely monotonicity properties and inequalities for functions involving the G_k functions and their logarithmic derivatives ?_k functions. We introduce a k-analogue of the Riemann Zeta function ?_k as an integral and using Schwarz’s and Holder... see more

Pags. 13 - 22  

Jagdev Singh, Devendra Kumar, Sushila Rathore

In this paper, we obtain the solution of a fractional reaction-diffusion equation associated with the generalized Riemann-Liouville fractional derivative as the time derivative and Riesz-Feller fractional derivative as the space-derivative. The results ar... see more

Pags. 23 - 32  

Kuldip Raj, Sunil K. Sharma

In this paper we introduce lacunary sequence spaces defined by a Musielak-Orlicz function M = (M_k) and a sequence of modulus functions F = (f_k). We also make an effort to study some topological properties and inclusion relations between these spaces.

Pags. 33 - 51  

Sadia Arshad, Vasile Lupulescu

The aim of this paper is to establish the existence of solutions and some properties of solutions set for a class of functional differential equations with causal operator under assumption that the equation satisfies the Carathéodory type condition. Also,... see more

Pags. 53 - 64  

Asha Ram Gairola, Girish Dobhal

In this paper we obtain moment estimates for a new sequence of q-operators very recently introduced by Aral and Gupta [1]. We obtain degree of approximation by the q-derivatives of these operators. We show that for a fixed q, these operators do not posses... see more

Pags. 65 - 81  

Henry Crawford Rhaly Jr.

Hyponormal operators are necessarily posinormal, but they need not be coposinormal.  Coposinormality can nevertheless sometimes be an aid in determining hyponormality.  This idea is applied to coposinormal factorable matrices whose interrupter i... see more

Pags. 83 - 86  

Sunny Chauhan, Shubham Bhatnagar, Stojan Radenovic

The aim of this paper is to prove a common fixed point theorem for a pair of weakly compatible mappings in fuzzy metric space by using the (CLRg) property. An example is also furnished which demonstrates the validity of our main result. As an application ... see more

Pags. 87 - 98  

Sunny Chauhan, B. D. Pant

The aim of this paper is to prove common fixed point theorems in Menger spaces using implicit relation and common (E.A) like property. An example is derived to support our main result. We extend our result to four finite families of self mappings. As an a... see more

Pags. 99 - 116  

Seyed H. Rasouli, M. Bahrampour

In this paper we present some coupled coincidence and coupled common fixed point theorems for mixed G-monotone mappings in partially ordered G-metric spaces.

Pags. 117 - 129  

Mircea Merca, Tanfer Tanriverdi

In the paper, the authors find several accurate approximations of some cosine power sums and present an asymptotic formula for these cosine power sums.

Pags. 131 - 136  

Lorenzo Robbiano, Maria-Laura Torrente

If a real world problem is modelled with a system of polynomial equations, the coefficients are in general not exact. The consequence is that small perturbations of the coefficients may lead to big changes of the solutions. In this paper we address the fo... see more

Pags. 137 - 164  

M. K. Aouf, A. O. Mostafa, A. Shamandy, E. A. Adwan

In this paper we introduce a new class of harmonic univalent functions defined by the Dziok-Srivastava operator. Coefficient estimates, extreme points, distortion bounds and convex combination for functions belonging to this class are obtained and also fo... see more

Pags. 165 - 177  

Lassad Bennasr, Rym Hasna Bettaieb, Ferjani Nouri

In this paper, we introduce and study the q-Dunkl Sonine transform and we establish a Plancherel formula for its dual. Furthermore we give many inversion formulas.

Pags. 179 - 199  

Poonam Sharma, Ravinder K. Raina

The purpose of this paper is to find some subordination preserving properties of analytic functions associated with a class of operators with complex parameters. Due to the compositional structure of the involved operator, we take its advantage in deducin... see more

Pags. 217 - 228  

Tian-Yu Zhang, Ai-Ping Ji, Feng Qi

In the paper, the authors, by Hölder's inequality, establish some Hermite-Hadamard type integral inequalities for GA-convex functions and apply these inequalities to construct several inequalities for special means.

Pags. 229 - 239