International Journal of Analysis
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The latest articles from Hindawi Publishing Corporation
© 2014 , Hindawi Publishing Corporation . All rights reserved.

Best Proximity Point Results in Complex Valued Metric Spaces
Wed, 27 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/ijanal/2014/827862/
We introduce the concept of proximity points for nonselfmappings between two subsets of a complex valued metric space which is a recently introduced extension of metric spaces obtained by allowing the metric function to assume values from the field of complex numbers. We apply this concept to obtain the minimum distance between two subsets of the
complex valued metric spaces. We treat the problem as that of finding the global optimal solution of a fixed point equation although the exact solution does not in general exist. We also define and use the concept of Pproperty in such spaces. Our results are illustrated with examples.
Binayak S. Choudhury, Nikhilesh Metiya, and Pranati Maity
Copyright © 2014 Binayak S. Choudhury et al. All rights reserved.

System of Operator Quasi Equilibrium Problems
Thu, 19 Jun 2014 06:43:32 +0000
http://www.hindawi.com/journals/ijanal/2014/848206/
We consider a system of operator quasi equilibrium problems and system of generalized quasi operator equilibrium problems in topological vector spaces. Using a maximal element theorem for a family of setvalued mappings as basic tool, we derive some existence theorems for solutions to these problems with and without involving condensing mappings.
Suhel Ahmad Khan
Copyright © 2014 Suhel Ahmad Khan. All rights reserved.

On the Spectral Properties of the Weighted Mean Difference Operator over the Sequence Space
Mon, 16 Jun 2014 08:56:02 +0000
http://www.hindawi.com/journals/ijanal/2014/786437/
In the present work the generalized weighted mean difference operator has been introduced by combining the generalized weighted mean and difference operator under certain special cases of sequences and . For any two sequences and of either constant or strictly decreasing real numbers satisfying certain conditions the difference operator is defined by with for all . Furthermore, we compute the spectrum and the fine spectrum of the operator over the sequence space . In fact, we determine the spectrum, the point spectrum, the residual spectrum, and the continuous spectrum of this operator on the sequence space .
P. Baliarsingh and S. Dutta
Copyright © 2014 P. Baliarsingh and S. Dutta. All rights reserved.

Integration over an InfiniteDimensional Banach Space and Probabilistic Applications
Sun, 15 Jun 2014 05:34:37 +0000
http://www.hindawi.com/journals/ijanal/2014/404186/
We study, for some subsets of , the Banach space of bounded real sequences . For any integer , we introduce a measure over that generalizes the dimensional Lebesgue measure; consequently, also a theory of integration is defined. The main result of our paper is a change of variables' formula for the integration.
Claudio Asci
Copyright © 2014 Claudio Asci. All rights reserved.

Frames of Eigenfunctions Associated with a Boundary Value Problem
Thu, 05 Jun 2014 09:53:36 +0000
http://www.hindawi.com/journals/ijanal/2014/590324/
We introduce and study a redundant system of retro Banach frames consisting of eigenfunctions associated with a given boundary value problem.
L. K. Vashisht and Shalu Sharma
Copyright © 2014 L. K. Vashisht and Shalu Sharma. All rights reserved.

On Nonautonomous Discrete Dynamical Systems
Mon, 02 Jun 2014 13:14:48 +0000
http://www.hindawi.com/journals/ijanal/2014/538691/
We define and study expansiveness, shadowing, and topological stability for a nonautonomous discrete dynamical system induced by a sequence of homeomorphisms on a metric space.
Dhaval Thakkar and Ruchi Das
Copyright © 2014 Dhaval Thakkar and Ruchi Das. All rights reserved.

Some Properties of Generalized Gegenbauer Matrix Polynomials
Thu, 29 May 2014 09:23:32 +0000
http://www.hindawi.com/journals/ijanal/2014/780649/
Various new generalized forms of the Gegenbauer matrix polynomials are introduced using the integral representation method, which allows us to express them in terms of Hermite matrix polynomials. Certain properties for these new generalized Gegenbauer matrix polynomials such as recurrence relations and expansion in terms of Hermite matrix polynomials are derived. Further, several families of bilinear and bilateral generating matrix relations for these polynomials are established and their applications are presented.
Ghazala Yasmin
Copyright © 2014 Ghazala Yasmin. All rights reserved.

Some New Difference Sequence Spaces of Invariant Means Defined by Ideal and Modulus Function
Wed, 28 May 2014 11:29:25 +0000
http://www.hindawi.com/journals/ijanal/2014/631301/
The main objective of this paper is to introduce a new kind of sequence spaces by combining the concepts of modulus function, invariant means, difference sequences, and ideal convergence. We also examine some topological properties of the resulting sequence spaces. Further, we introduce a new concept of convergence and obtain a condition under which this convergence coincides with abovementioned sequence spaces.
Sudhir Kumar, Vijay Kumar, and S. S. Bhatia
Copyright © 2014 Sudhir Kumar et al. All rights reserved.

Solvability of a ThirdOrder Singular Generalized Left Focal Problem in Banach Spaces
Mon, 26 May 2014 08:11:58 +0000
http://www.hindawi.com/journals/ijanal/2014/638976/
We consider the existence of positive solution for a thirdorder singular generalized left focal boundary value problem with full derivatives in Banach spaces. Green’s function and its
properties, explicit a priori, estimates will be presented. By means of the theories of the fixed point in cones,
we establish some new and general results on the existence of single and multiple positive solutions to the
thirdorder singular generalized left focal boundary value problem. Our results are generalizations and
extensions of the results of the focal boundary value problem. An example is included to illustrate the
results obtained.
Youwei Zhang
Copyright © 2014 Youwei Zhang. All rights reserved.

HermiteHadamard and Simpson Type Inequalities for Differentiable PGAFunctions
Thu, 22 May 2014 08:26:35 +0000
http://www.hindawi.com/journals/ijanal/2014/125439/
The author introduces the concept of the GAfunctions, gives HermiteHadamard's inequalities for GAfunctions, and defines a new identity. By using this identity, the author obtains new estimates on generalization of Hadamard and Simpson type inequalities for GAfunctions. Some applications to special means of real numbers are also given.
İmdat İşcan
Copyright © 2014 İmdat İşcan. All rights reserved.

New Relations Involving an Extended Multiparameter HurwitzLerch Zeta Function with Applications
Tue, 13 May 2014 07:33:01 +0000
http://www.hindawi.com/journals/ijanal/2014/680850/
We derive several new expansion formulas involving an extended multiparameter HurwitzLerch zeta function introduced and studied recently by Srivastava et al. (2011). These expansions are obtained by using some fractional calculus methods such as the generalized Leibniz rules, the Taylorlike expansions in terms of different functions, and the generalized chain rule. Several (known or new) special cases are also given.
H. M. Srivastava, Sébastien Gaboury, and Richard Tremblay
Copyright © 2014 H. M. Srivastava et al. All rights reserved.

The Hopf Bifurcation Analysis and Optimal Control of a Delayed SIR Epidemic Model
Wed, 07 May 2014 11:34:29 +0000
http://www.hindawi.com/journals/ijanal/2014/940819/
We propose a delayed SIR model with saturated incidence rate.
The delay is incorporated into the model in order to model the latent period. The basic reproductive number
is obtained. Furthermore, using time delay as a bifurcation parameter, it is proven that there exists a critical value of delay for the stability of diseases prevalence. When the delay exceeds the critical value, the system loses its stability and a Hopf bifurcation occurs. The model is extended to assess
the impact of some control measures, by reformulating the model as an optimal control problem with vaccination and treatment. The existence of the optimal control is also proved. Finally, some numerical simulations are performed to verify the theoretical
analysis.
Abdelhadi Abta, Hassan Laarabi, and Hamad Talibi Alaoui
Copyright © 2014 Abdelhadi Abta et al. All rights reserved.

An Estimate of the Rate of Convergence of the Fourier Series in the Generalized Hölder Metric by Delayed Arithmetic Mean
Wed, 07 May 2014 08:27:36 +0000
http://www.hindawi.com/journals/ijanal/2014/171675/
We study the rate of convergence problem of the Fourier series by Delayed Arithmetic Mean in the generalized HÃ¶lder metric space which was earlier introduced by Das, Nath, and Ray and obtain a sharper estimate of Jackson's order.
L. Nayak, G. Das, and B. K. Ray
Copyright © 2014 L. Nayak et al. All rights reserved.

Existence and Nonexistence of a Solution for a Nonlinear Elliptic Problem with RightHand Side Measure
Sun, 04 May 2014 00:00:00 +0000
http://www.hindawi.com/journals/ijanal/2014/320527/
We discuss the existence and nonexistence of solution of a nonlinear problem elliptic, where is a Radon measure with bounded total variation, by considering the Sobolev spaces with variable exponents. This study is done in two cases: (i) is absolutely continuous with respect to capacity. and (ii) is concentrated on a Borel set of null capacity.
Elhoussine Azroul, Abdelkrim Barbara, and Hicham Redwane
Copyright © 2014 Elhoussine Azroul et al. All rights reserved.

On Convergence with respect to an Ideal and a Family of Matrices
Thu, 24 Apr 2014 10:13:45 +0000
http://www.hindawi.com/journals/ijanal/2014/490904/
P. Das et al. recently introduced and studied the notions of strong summability with respect to an Orlicz function and statistical convergence, where is a nonnegative regular matrix and is an ideal on the set of natural numbers. In this paper, we will generalise these notions by replacing with a family of matrices and with a family of Orlicz functions or moduli and study the thus obtained convergence methods. We will also give an application in Banach space theory, presenting a generalisation of Simons' suplimsuptheorem to the newly introduced convergence methods (for the case that the filter generated by the ideal has a countable base), continuing some of the author's previous work.
JanDavid Hardtke
Copyright © 2014 JanDavid Hardtke. All rights reserved.

On the Logarithmic Regularity Conditions for the Variable Exponent Hardy Type Inequality
Wed, 23 Apr 2014 00:00:00 +0000
http://www.hindawi.com/journals/ijanal/2014/606012/
We discuss a logarithmic
regularity condition in a neighborhood of the origin and infinity on the
exponent functions and for the variable exponent
Hardy inequality to hold.
Aziz Harman and Mustafa Özgür Keleş
Copyright © 2014 Aziz Harman and Mustafa Özgür Keleş. All rights reserved.

New General Integral Inequalities for Lipschitzian Functions via Hadamard Fractional Integrals
Tue, 22 Apr 2014 12:12:05 +0000
http://www.hindawi.com/journals/ijanal/2014/353924/
The author obtains new estimates on generalization
of Hadamard, Ostrowski, and Simpson type inequalities for Lipschitzian functions via Hadamard fractional integrals. Some applications to special means of positive real numbers are also given.
İmdat İşcan
Copyright © 2014 İmdat İşcan. All rights reserved.

Initial Coefficient Bounds for a General Class of Biunivalent Functions
Wed, 16 Apr 2014 11:53:26 +0000
http://www.hindawi.com/journals/ijanal/2014/867871/
We find estimates on the coefficients and for
functions in the function class . The results presented in this paper improve or generalize the recent work of Srutha Keerthi and Raja (2013).
Şahsene Altınkaya and Sibel Yalçın
Copyright © 2014 Şahsene Altınkaya and Sibel Yalçın. All rights reserved.

Unexpected Solutions of the Nehari Problem
Thu, 10 Apr 2014 09:40:17 +0000
http://www.hindawi.com/journals/ijanal/2014/467831/
The Nehari characteristic numbers are the minimal values of an integral functional associated with a boundary value problem (BVP) for nonlinear ordinary differential equation. In case of multiple solutions of the BVP, the problem of identifying of minimizers arises. It was observed earlier that for nonoscillatory (positive) solutions
of BVP those with asymmetric shape can provide the minimal value to a functional. At the same time, an even solution with regular shape is not a minimizer. We show by constructing the example that the same phenomenon can be observed in the Nehari problem for the fifth characteristic number which is associated with oscillatory solutions of BVP (namely, with those having exactly four zeros in .
A. Gritsans and F. Sadyrbaev
Copyright © 2014 A. Gritsans and F. Sadyrbaev. All rights reserved.

Jensen Functionals on Time Scales for Several Variables
Thu, 10 Apr 2014 07:43:15 +0000
http://www.hindawi.com/journals/ijanal/2014/126797/
We define Jensen functionals and concerned generalized means for several variables on time scales. We derive properties of Jensen functionals and apply them to generalized means. In this setting, we obtain generalizations, refinements, and conversions of many remarkable inequalities.
Matloob Anwar, Rabia Bibi, Martin Bohner, and Josip Pečarić
Copyright © 2014 Matloob Anwar et al. All rights reserved.

On the Inequalities for the Generalized Trigonometric Functions
Mon, 07 Apr 2014 07:34:14 +0000
http://www.hindawi.com/journals/ijanal/2014/319837/
This paper deals with Huygenstype and Wilkertype inequalities for the generalized trigonometric functions of P. Lindqvist. A major mathematical tool used in this work is a generalized version of the SchwabBorchardt mean introduced recently by the author of this work.
Edward Neuman
Copyright © 2014 Edward Neuman. All rights reserved.

PascuType Harmonic Functions with Positive Coefficients Involving Salagean Operator
Sun, 06 Apr 2014 06:29:21 +0000
http://www.hindawi.com/journals/ijanal/2014/793709/
Making use of a Salagean operator, we introduce a new class of complex valued
harmonic functions which are orientation preserving and univalent in the open unit disc. Among the results presented in this paper including the coeffcient bounds, distortion inequality, and covering property, extreme points, certain inclusion results, convolution properties, and partial sums for this generalized class of functions are discussed.
K. Vijaya, G. Murugusundaramoorthy, and M. Kasthuri
Copyright © 2014 K. Vijaya et al. All rights reserved.

On a Pointwise Convergence of QuasiPeriodicRational Trigonometric Interpolation
Thu, 03 Apr 2014 13:37:13 +0000
http://www.hindawi.com/journals/ijanal/2014/249513/
We introduce a procedure for convergence acceleration of the quasiperiodic trigonometric interpolation by application of rational corrections which leads to quasiperiodicrational
trigonometric interpolation. Rational corrections contain unknown parameters whose determination is important for realization of interpolation. We investigate the pointwise convergence
of the resultant interpolation for special choice of the unknown parameters and derive the exact
constants of the main terms of asymptotic errors.
Arnak Poghosyan and Lusine Poghosyan
Copyright © 2014 Arnak Poghosyan and Lusine Poghosyan. All rights reserved.

Some Properties of Locally Closed Sets
Mon, 31 Mar 2014 06:40:12 +0000
http://www.hindawi.com/journals/ijanal/2014/393618/
A new kind of generalization of (1, 2)*closed set, namely, (1, 2)*locally closed set, is introduced and using (1, 2)*locally closed sets we study the concept of (1, 2)*LCcontinuity in bitopological space. Also we study (1, 2)*contracontinuity and lastly investigate its relationship with (1, 2)*LCcontinuity.
Baby Bhattacharya, Arnab Paul, and Sudip Debnath
Copyright © 2014 Baby Bhattacharya et al. All rights reserved.

On the Biharmonic Operator with Critical Sobolev Exponent and Nonlinear Steklov Boundary Condition
Wed, 19 Mar 2014 11:35:48 +0000
http://www.hindawi.com/journals/ijanal/2014/498386/
We show that this operator possesses at least one nondecreasing sequence of positive eigenvalues. A direct characterization of the principal eigenvalue (the first one) is given that we apply to study the spectrum of the biharmonic operator with a critical Sobolev exponent and the nonlinear Steklov boundary conditions using variational arguments and trace critical Sobolev embedding.
Abdelouahed El Khalil, My Driss Morchid Alaoui, and Abdelfattah Touzani
Copyright © 2014 Abdelouahed El Khalil et al. All rights reserved.

On Solutions for a Generalized Differential Equation Arising in Boundary Layer Problem
Tue, 18 Mar 2014 08:13:06 +0000
http://www.hindawi.com/journals/ijanal/2014/472698/
We treat the existence and uniqueness of a solution for the generalized Blasius problem which arises in boundary layer theory. The shooting method is used in the proof of our main result. An example is included to illustrate the results.
Sergey Smirnov
Copyright © 2014 Sergey Smirnov. All rights reserved.

Coupled Fixed Point Theorems for ()Contractive Mixed Monotone Mappings in Partially Ordered Metric Spaces and Applications
Tue, 18 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/ijanal/2014/586096/
The object of this paper is to establish the existence and uniqueness of coupled fixed points under a (, )contractive condition for mixed monotone operators in the setup of partially ordered metric spaces. Presented work generalizes the recent results of Berinde (2011, 2012) and weakens the contractive conditions involved in the wellknown results of Bhaskar and Lakshmikantham (2006), and Luong and Thuan (2011). The effectiveness of our work is validated with the help of a suitable example. As an application, we give a result of existence and uniqueness for the solutions of a class of nonlinear integral equations.
Manish Jain, Neetu Gupta, and Sanjay Kumar
Copyright © 2014 Manish Jain et al. All rights reserved.

Integrable Solutions of a Nonlinear Integral Equation via Noncompactness Measure and Krasnoselskii's Fixed Point Theorem
Sun, 16 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/ijanal/2014/280709/
We study the existence of solutions of a nonlinear Volterra integral equation in the space . With the help of Krasnoselskii’s fixed point theorem and the theory of measure of weak noncompactness, we prove an existence result for a functional integral equation which includes several classes on nonlinear integral equations. Our results extend and generalize some previous works. An example is given to support our results.
Mahmoud Bousselsal and Sidi Hamidou Jah
Copyright © 2014 Mahmoud Bousselsal and Sidi Hamidou Jah. All rights reserved.

FeketeSzegö Type Coefficient Inequalities for Certain Subclass of Analytic Functions and Their Applications Involving the OwaSrivastava Fractional Operator
Thu, 13 Mar 2014 16:15:18 +0000
http://www.hindawi.com/journals/ijanal/2014/490359/
A new subclass of analytic functions is introduced. For this class, firstly the FeketeSzegö type coefficient inequalities are derived. Various known or new special cases of our results are also pointed out. Secondly some applications of our main results involving the OwaSrivastava fractional operator are considered. Thus, as one of these applications of our result, we obtain the FeketeSzegö type inequality for a class of normalized analytic functions, which is defined here by means of the Hadamard product (or convolution) and the OwaSrivastava fractional operator.
Serap Bulut
Copyright © 2014 Serap Bulut. All rights reserved.

Quasilinear Inner Product Spaces and Hilbert Quasilinear Spaces
Tue, 11 Mar 2014 09:27:55 +0000
http://www.hindawi.com/journals/ijanal/2014/258389/
Aseev launched a new branch of functional analysis by introducing the theory of quasilinear spaces in the framework of the topics of norm, bounded quasilinear operators and functionals (Aseev (1986)). Furthermore, some quasilinear counterparts of classical nonlinear analysis that lead to such result as Frechet derivative and its applications were examined deal with. This pioneering work causes a lot of results in such applications such as (RojasMedar et al. (2005), Talo and Başar (2010), and Nikol'skiĭ (1993)). His work has motivated us to introduce the concept of quasilinear inner product spaces. Thanks to this new notion, we obtain some new theorems and definitions which are quasilinear counterparts of fundamental definitions and theorems in linear functional analysis. We claim that some new results related to this concept provide an important contribution to the improvement of quasilinear functional analysis.
Hacer Bozkurt, Sümeyye Çakan, and Yılmaz Yılmaz
Copyright © 2014 Hacer Bozkurt et al. All rights reserved.