Semnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220A more accurate half-discrete Hardy-Hilbert-type inequality with the best possible constant factor related to the extended Riemann-Zeta function12737510.22075/ijnaa.2016.375ENMichael Th.RassiasInstitute of Mathematics, University of Zurich, CH-8057, Zurich, Switzerland \ & Institute for Advanced Study, Program in Interdisciplinary Studies, 1 Einstein Dr, Princeton, NJ 08540, USABichengYangDepartment of Mathematics, Guangdong University of Education, Guangzhou, Guangdong 510303, P. R. ChinaJournal Article20150511By the method of weight coefficients, techniques of real analysis and Hermite-Hadamard's inequality, a half-discrete Hardy-Hilbert-type inequality related to the kernel of the hyperbolic cosecant function with the best possible constant factor expressed in terms of the extended Riemann-zeta function is proved. The more accurate equivalent forms, the operator expressions with the norm, the reverses and some particular cases are also considered.https://ijnaa.semnan.ac.ir/article_375_c8b2e9a805289b56d307b04d2e8cc8c1.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Some functional inequalities in variable exponent spaces with a more generalization of uniform continuity condition293843910.22075/ijnaa.2016.439ENSomayehSaiedinezhadAssistant professor of Iran University of Science and technologyJournal Article20151205Some functional inequalities in variable exponent Lebesgue spaces are presented. The bi-weighted modular inequality with variable exponent $p(.)$ for the Hardy operator restricted to non- increasing function which is<br />$$<br />int_0^infty (frac{1}{x}int_0^x f(t)dt)^{p(x)}v(x)dxleq<br />Cint_0^infty f(x)^{p(x)}u(x)dx,<br />$$<br />is studied. We show that the exponent $p(.)$ for which these modular inequalities hold must have constant oscillation. Also we study the boundedness of integral operator $Tf(x)=int K(x,y) f(x)dy$ on $L^{p(.)}$ when the variable exponent $p(.)$ satisfies some uniform continuity condition that is named $beta$-controller condition and so multiple interesting results which can be seen as a generalization of the same classical results in the constant exponent case, derived.https://ijnaa.semnan.ac.ir/article_439_a9ff1b7775e024c726cd0418c812bd7b.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Weak and $(-1)$-weak amenability of second dual of Banach algebras394845710.22075/ijnaa.2016.457ENA.ValadkhaniUniversity of Simon Fraser, Department of Education, Vancouver, CanadaS.A.R.HosseiniounUniversity of Arkansas, Department of Mathematical sciences, Fayetteville, AR 72703, USAJournal Article20151219For a Banach algebra $A$, $A''$ is $(-1)$-Weakly amenable if $A'$ is a Banach $A''$-bimodule and $H^1(A'',A')=\{0\}$. In this paper, among other things, we study the relationships between the $(-1)$-Weakly amenability of $A''$ and the weak amenability of $A''$ or $A$. Moreover, we show that the second dual of every $C^\ast$-algebra is $(-1)$-Weakly amenable.https://ijnaa.semnan.ac.ir/article_457_caf6063aacac36ba84aaec150ac133f2.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Fixed points for Chatterjea contractions on a metric space with a graph495844910.22075/ijnaa.2016.449ENKamalFallahiDepartment of Mathematics, Payame Noor University,
P.O. Box 19395-3697, Tehran, IranArisAghaniansDepartment of Mathematics, Payame Noor University, P.O. Box 19395-3697, Tehran, IranJournal Article20141223In this work, we formulate Chatterjea contractions using graphs in metric spaces endowed with a graph and investigate the existence of fixed points for such mappings under two different hypotheses. We also discuss the uniqueness of the fixed point. The given result is a generalization of Chatterjea's fixed point theorem from metric spaces to metric spaces endowed with a graph.https://ijnaa.semnan.ac.ir/article_449_28e573679a0823fddb453f5c119bc3ee.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Application of new basis functions for solving nonlinear stochastic differential equations596845010.22075/ijnaa.2016.450ENZahraSadatiDepartment of Mathematics, khomein Branch, Islamic Azad University, khomein, IranJournal Article20140519This paper presents an approach for solving a nonlinear stochastic differential equations (NSDEs) using a new basis functions (NBFs). These functions and their operational matrices are used for representing matrix form of the NBFs. With using this method in combination with the collocation method, the NSDEs are reduced a stochastic nonlinear system of equations and unknowns. Then, the error analysis is proved. Finally, numerical examples illustrate applicability and accuracy of the presented method.https://ijnaa.semnan.ac.ir/article_450_5a634288d0d55d50b7448802c0a9f43d.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220( p,q)-Genuine Baskakov-Durrmeyer operators697645410.22075/ijnaa.2016.454ENVijayGuptaNetaji Subhas Institute of Technology
New Delhi, IndiaTh. M.RassiasNational Technical University of Athens
Department of Mathematics
Zografou Campus,
GR-15780, Athens, GreeceJournal Article20151218In the present article, we propose the $(p,q)$ variant of genuine Baskakov Durrmeyer operators. We obtain moments and establish some direct results, which include weighted approximation and results in terms of modulus of continuity of second order.https://ijnaa.semnan.ac.ir/article_454_0436ce511d55e45b51b5f1bf2fc99a3d.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Coincidence point and common fixed point results via scalarization function779147810.22075/ijnaa.2016.478ENSushantaMohantaWest Bengal State University, Barasat, 24 Parganas(North), Kolkata-700126, West Bengal, IndiaJournal Article20140809The main purpose of this paper is to obtain sufficient conditions for existence of points of coincidence and common fixed points for three self mappings in $b$-metric spaces. Next, we obtain cone $b$-metric version of these results by using a scalarization function. Our results extend and generalize several well known comparable results in the existing literature.https://ijnaa.semnan.ac.ir/article_478_fcdfd8b1214eedc472509c9cb0d177f6.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Strong convergence of modified iterative algorithm for family of asymptotically nonexpansive mappings9310847910.22075/ijnaa.2016.479ENGodwin ChidiUgwunnadiMichael Okpara University of Agriculture, Umudike, Abia State, Nigeria0000-0002-2711-7888Journal Article20140824In this paper we introduce new modified implicit and explicit algorithms and prove strong convergence of the two algorithms to a common fixed point of a family of uniformly asymptotically regular asymptotically nonexpansive mappings in a real reflexive Banach space with a uniformly G$\hat{a}$teaux differentiable norm. Our result is applicable in $L_{p}(\ell_{p})$ spaces, $1 < p <\infty$ and consequently in sobolev spaces.https://ijnaa.semnan.ac.ir/article_479_faac311c75f79ded9e0cb8b61b577217.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Product of derivations on C$^*$-algebras10911445110.22075/ijnaa.2017.451ENKhalilEkramiDepartment of Mathematics, Payame Noor UniversityMadjidMirzavaziriDepartment of Pure Mathematics and Center of Excellence in Analysis on Algebraic Struc-tures (CEAAS), Ferdowsi University of MashhadHamid RezaEbrahimi VishkiDepartment of Pure Mathematics and Center of Excellence in Analysis on Algebraic Struc-tures (CEAAS), Ferdowsi University of Mashhad,Journal Article20160717Let $\mathfrak{A}$ be an algebra. A linear mapping $\delta:\mathfrak{A}\to\mathfrak{A}$ is called a \textit{derivation} if $\delta(ab)=\delta(a)b+a\delta(b)$ for each $a,b\in\mathfrak{A}$. Given two derivations $\delta$ and $\delta'$ on a $C^*$-algebra $\mathfrak A$, we prove that there exists a derivation $\Delta$ on $\mathfrak A$ such that $\delta\delta'=\Delta^2$ if and only if either $\delta'=0$ or $\delta=s\delta'$ for some $s\in\mathbb{C}$.https://ijnaa.semnan.ac.ir/article_451_0bbbe5991acf696ef672151434ad1e2a.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Some drifts on posets and its application to fuzzy subalgebras11512550310.22075/ijnaa.2016.503ENXiaohongZhangCollege of Arts and Sciences
Shanghai Maritime University, ChinaHee SikKimResearch Institute for Natural Sci., Department of Mathematics, Hanyang University, Seoul, 04763, KoreaJosephNeggersDepartment of Mathematics
University of Alabama, USAJournal Article20151218In this paper, given a poset $(X,\leq)$, we introduce some drifts on a groupoid $(X,*)$ with respect to $(X,\leq)$, and we obtain several properties of these drifts related to the notion of $Bin(X)$. We discuss some connections between fuzzy subalgebras and upward drifts.https://ijnaa.semnan.ac.ir/article_503_0e526cbeda0c0cac76e960d4f005b888.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220The solutions to the operator equation $TXS^* -SX^*T^*=A$ in Hilbert $C^*$-modules12713250210.22075/ijnaa.2016.502ENMehdiMohammadzadeh KarizakiDepartment of Mathematics,
Mashhad Branch, Islamic Azad University,
Mashhad 91735, IranMahmoudHassaniDepartment of Mathematics, Mashhad Branch, Islamic Azad University,
Mashhad, Iran.DraganDjordjevicD. S. Djordjevic, Faculty of Sciences and Mathematics, University of acute;
Nis, Visegradska 33, P.O. Box 224, 18000 Nis, Serbia.Journal Article20151119In this paper, we find explicit solution to the operator equation $TXS^* -SX^*T^*=A$ in the general setting of the adjointable operators between Hilbert $C^*$-modules, when $T,S$ have closed ranges and $S$ is a self adjoint operator.https://ijnaa.semnan.ac.ir/article_502_53db64a878b47ab121fa3552645e4306.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Some inequalities in connection to relative orders of entire functions of several complex variables13314151810.22075/ijnaa.2016.518ENSanjib KumarDattaAssociate Professor
Department of Mathematics
University of KalyaniTanmayBiswasRajbari, Rabindrapalli, R. N. Tagore Road, P.O. Krishnagar, Dist-Nadia,PIN-741101, West Bengal, IndiaDebasmitaDuttaMohanpara Nibedita Balika Vidyalaya (High),P.o - Amrity, Block - English Bazar, Dist.- District - Malda, PIN- 732208, West Bengal, IndiaJournal Article20150712Let f, g and h be all entire functions of several complex variables. In this paper we would like to establish some inequalities on the basis of relative order and relative lower order of f with respect to g when the relative orders and relative lower orders of both f and g with respect to h are given.https://ijnaa.semnan.ac.ir/article_518_df28fc621a27f6e4fc6e1ec5be008124.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220A generalization of Martindale's theorem to $(\alpha, \beta)-$homomorphism14315148110.22075/ijnaa.2016.481ENEqbalKeyhaniDepartment of Mathematics, Mashhad Branch, Islamic Azad University,
Mashhad, Iran.MahmoudHassaniDepartment of Mathematics, Mashhad Branch, Islamic Azad University, Mashhad, IranMaryamAmyariDepartment of Mathematics, Mashhad Branch, Islamic Azad University,
Mashhad, Iran.Journal Article20150116Martindale proved that under some conditions every multiplicative isomorphism between two rings is additive. In this paper, we extend this theorem to a larger class of mappings and conclude that every multiplicative $(\alpha, \beta)-$derivation is additive.https://ijnaa.semnan.ac.ir/article_481_ad67ee626a0c5ed5b5884900645f4b81.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Algebras defined by homomorphisms15316445610.22075/ijnaa.2016.456ENFeysalHassaniPayame Noor UniversityJournal Article20160915Let $\mathcal{R}$ be a commutative ring with identity, let $A$ and $B$ be two $\mathcal{R}$-algebras and $\varphi:B\longrightarrow A$ be an $\mathcal{R}$-additive algebra homomorphism. We introduce a new algebra $A\times_\varphi B$, and give some basic properties of this algebra. Generalized $2$-cocycle derivations on $A\times_\varphi B$ are studied. Accordingly, $A\times_\varphi B$ is considered from the perspective of Banach algebras.https://ijnaa.semnan.ac.ir/article_456_802d5ab4109a34749b6a7c2c7798aea9.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220On boundary value problems of higher order abstract fractional integro-differential equations16518452010.22075/ijnaa.2017.520ENSabri T. M.ThabetDepartment of Mathematics, Dr. Babasaheb Ambedkar Marathwada University,
Aurangabad - 431004, Maharashtra, India.Machindra B.DhakneDepartment of Mathematics, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad - 431004, Maharashtra, India.Journal Article20150825The aim of this paper is to establish the existence of solutions of boundary value problems of nonlinear fractional integro-differential equations involving Caputo fractional derivative by using the techniques such as fractional calculus, H\"{o}lder inequality, Krasnoselskii's fixed point theorem and nonlinear alternative of Leray-Schauder type. Examples are exhibited to illustrate the main results.https://ijnaa.semnan.ac.ir/article_520_194aeb0c75105fe3eb3c003fb975b20e.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Existence of Mild Solutions to a Cauchy Problem Presented by Fractional Evolution Equation with an Integral Initial Condition185193226210.22075/ijnaa.2017.1080.1228ENMohamad HosseinAkramiDepartment of Mathematics, Yazd University, Yazd, Iran.Gholam HussainErjaeeDepartment of Mathematics, College of Science, Shiraz University, 74811-71466 Shiraz, IranJournal Article20151221In this article, we apply two new fixed point theorems to investigate the existence of mild solutions for a nonlocal fractional Cauchy problem with an integral initial condition in Banach spaces.https://ijnaa.semnan.ac.ir/article_2262_c2b9bd3c99a66a2db8f761f296a64c4b.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Approximation of a generalized Euler-Lagrange type additive mapping on Lie $C^{\ast}$-algebras195204226310.22075/ijnaa.2017.1332.1329ENZhihuaWangSchool of Science, Hubei University of Technology, Wuhan, Hubei 430068, P.R. ChinaPrasanna K.SahooDepartment of Mathematics, University of Louisville, Louisville, KY 40292, USAJournal Article20160417Using fixed point method, we prove some new stability results for Lie $(\alpha,\beta,\gamma)$-derivations and Lie $C^{\ast}$-algebra homomorphisms on Lie $C^{\ast}$-algebras associated with the Euler-Lagrange type additive functional equation<br />\begin{align*}<br />\sum^{n}_{j=1}f{\bigg(-r_{j}x_{j}+\sum_{1\leq i \leq n, i\neq<br />j}r_{i}x_{i}\bigg)}+2\sum^{n}_{i=1}r_{i}f(x_{i})=nf{\bigg(\sum^{n}_{i=1}r_{i}x_{i}\bigg)}<br />\end{align*}<br />where $r_{1},\ldots,r_{n}\in {\mathbb{R}}$ are given and $r_{i},r_{j}\neq 0$ for some $1\leq i< j\leq n$.https://ijnaa.semnan.ac.ir/article_2263_c8c5159b5ec222ee67da73e89bf61592.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Existence of solutions of infinite systems of integral equations in the Frechet spaces205216226410.22075/ijnaa.2017.1074.1222ENRezaArabDepartment of Mathematics, Sari Branch, Islamic Azad University, Sari, IranRezaAllahyariDepartment of Mathematics, Mashhad Branch, Islamic Azad University, Mashhad, Iran.AliShole HaghighiDepartment of Mathematics, Sari Branch, Islamic Azad University, Sari, Iran.Journal Article20151219In this paper we apply the technique of measures of noncompactness to the theory of infinite system of integral equations in the Fr´echet spaces. Our aim is to provide a few generalization of Tychonoff fixed point theorem and prove the existence of solutions for infinite systems of nonlinear integral equations with help of the technique of measures of noncompactness and a generalization of Tychonoff fixed point theorem. Also, we present an example of nonlinear integral equations to show the efficiency of our results. Our results extend several comparable results obtained in the previous literature.https://ijnaa.semnan.ac.ir/article_2264_d473862b05d2a18a6a30b75788356ff0.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Some common fixed point theorems for Gregus type mappings217228227210.22075/ijnaa.2017.10452.1504ENSumitChandokSchool of Mathematics, Thapar University, Patiala-147004, Punjab, IndiaJournal Article20140803In this paper, sufficient conditions for the existence of common fixed points for a compatible pair of self maps of Gregus<br />type in the framework of convex metric spaces have been obtained. Also, established the existence of common fixed points for a pair of compatible mappings of type (B) and consequently for compatible mappings of type (A). The proved results generalize and extend some of the well known results of the literature.https://ijnaa.semnan.ac.ir/article_2272_ae88375151c0dfb6fc680b0a1f00781f.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220A contribution to approximate analytical evaluation of Fourier series via an Applied Analysis standpoint; an application in turbulence spectrum of eddies229242230810.22075/ijnaa.2017.10573.1510ENJohnVenetisSchool of Applied Mathematics and Physical Sciences NTUA, Section of Mechanics, 5 Heroes of Polytechnion Avenue GR,15773 Athens, GreeceEmiliosSideridisSchool of Applied Mathematics and Physical Sciences NTUA, Section of Mechanics, 5 Heroes of Polytechnion Avenue GR,15773 Athens, Greece.Journal Article20140212In the present paper, we shall attempt to make a contribution to approximate analytical evaluation of the harmonic decomposition of an arbitrary continuous function. The basic assumption is that the class of functions that we investigate here, except the verification of Dirichlet's principles, is concurrently able to be expanded in Taylor's representation, over a particular interval of their domain of definition. Thus, we shall take into account the simultaneous validity of these two properties over this interval, in order to obtain an alternative equivalent representation of the corresponding harmonic decomposition for this category of functions. In the sequel, we shall also implement this resultant formula in the investigation of turbulence spectrum of eddies according to known from literature Von Karman's formulation, making the additional assumption that during the evolution of such stochastic dynamic effects with respect to time, the occasional time-returning period can be actually supposed to tend to infinity.https://ijnaa.semnan.ac.ir/article_2308_89fe59563da22b632b56d4c4ff3a0620.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Projected non-stationary simultaneous iterative methods24325150110.22075/ijnaa.2016.501ENTourajNikazadSchool of Mathematics,
Iran University of Science and TechnologyMahdiMirzapourSchool of Mathematics,
Iran University of Science and TechnologyJournal Article20151008In this paper, we study Projected non-stationary Simultaneous It-erative Reconstruction Techniques (P-SIRT). Based on algorithmic op-erators, convergence result are adjusted with Opial’s Theorem. The advantages of P-SIRT are demonstrated on examples taken from to-mographic imaging.https://ijnaa.semnan.ac.ir/article_501_d9a27af16a0f373c8ccda25b95136ec7.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Random fractional functional differential equations253267230910.22075/ijnaa.2017.980.1185ENVuHoInstitute for Computational Science
Ton Duc Thang University;
19 Nguyen Huu Tho, District 7, Ho Chi Minh City, VietnamJournal Article20151028In this paper, we prove the existence and uniqueness results to the random fractional functional differential equations under assumptions more general than the Lipschitz type condition. Moreover, the distance between exact solution and appropriate solution, and the existence extremal solution of the problem is also considered.https://ijnaa.semnan.ac.ir/article_2309_3b8da04d29148ca35bf85766e16ab224.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Differential transform method for a a nonlinear system of differential equations arising in HIV infection of CD4+T cell26927745810.22075/ijnaa.2016.458ENJavadDamirchiDepartment of Mathematics, Faculty of Mathematics, Statistics and Computer Science, Semnan University,Semnan, IranTaherRahimi ShamamiDepartment of Mathematics, Faculsty of Mathematics, Statistics and Computer Science, Semnan University, Semnan IranJournal Article20160102In this paper, differential transform method (DTM) is described and is applied to solve systems of nonlinear ordinary differential equations which is arising in HIV infections of cell. Intervals of validity of the solution will be extended by using Pade approximation. The results also will be compared with those results obtained by Runge-Kutta method. The technique is described and is illustrated with one numerical example. The numerical results shown that the reliability and efficiency of the method.https://ijnaa.semnan.ac.ir/article_458_eb4989c1d76da877a5c06a66b8d994fd.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Solutions and stability of variant of Van Vleck's and D'Alembert's functional equations27930177410.22075/ijnaa.2017.1803.1472ENTh.M.RassiasDepartment of Mathematics, National Technical University of Athens, Zofrafou Campus, 15780 Athens, GreeceElhoucienElqorachiIbn Zohr University, Faculty of Sciences
Department of Mathematic, Agadir, MoroccoAhmedRedouaniIbn Zohr University, Faculty of Sciences
Department of Mathematic, Agadir, MoroccoJournal Article20151220In this paper. (1) We determine the complex-valued solutions of the following variant of Van Vleck's functional equation<br />$$\int_{S}f(\sigma(y)xt)d\mu(t)-\int_{S}f(xyt)d\mu(t) = 2f(x)f(y), \;x,y\in S,$$ where $S$ is a semigroup, $\sigma$ is an involutive morphism of $S$, and $\mu$ is a complex measure that is linear combinations of Dirac measures $(\delta_{z_{i}})_{i\in I}$, such that for all $i\in I$, $z_{i}$ is contained in the center of $S$. (2) We determine the complex-valued continuous solutions of the following variant of d'Alembert's functional equation<br />$$\int_{S}f(xty)d\upsilon(t)+\int_{S}f(\sigma(y)tx)d\upsilon(t) = 2f(x)f(y), \;x,y\in S,$$ where $S$ is a topological semigroup, $\sigma$ is a continuous involutive automorphism of $S$, and $\upsilon$ is a complex measure with compact support and which is $\sigma$-invariant. (3) We prove the superstability theorems of the first functional equation.https://ijnaa.semnan.ac.ir/article_774_ac5ba88e6d8ed3f180cc2ff75a074111.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Fractional dynamical systems: A fresh view on the local qualitative theorems30331850510.22075/ijnaa.2016.505ENKhosroSayevandFaculty of Mathematical Sciences, Malayer University, P.O.Box 16846-13114, Malayer, IranJournal Article20160205The aim of this work is to describe the qualitative behavior of the solution set of a given system of fractional differential equations and limiting behavior of the dynamical system or flow defined by the system of fractional differential equations. In order to achieve this goal, it is first necessary to develop the local theory for fractional nonlinear systems. This is done by the extension of the local center manifold theorem, the stable manifold theorem and the Hartman-Grobman theorem to the scope of fractional differential systems. These latter two theorems establish that the qualitative behavior of the solution set of a nonlinear system of fractional differential equations near an equilibrium point is typically the same as the qualitative behavior of the solution set of the corresponding linearized system near the equilibrium point. Furthermore, we discuss the stability conditions for the equilibrium points of these systems. We point out that, the fractional derivative in these systems is in the Caputo sense.https://ijnaa.semnan.ac.ir/article_505_6dd6f750a1f5b7ac40e8c8f4e08ab830.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Asymptotic behavior of a system of two difference equations of exponential form319329231710.22075/ijnaa.2017.1301.1320ENMai NamPhongDepartment of Mathematical Analysis, University of Transport and Communications, Hanoi City, VietnamVu VanKhuongDepartment of Mathematical Analysis, University of Transport and Communications, Hanoi City, VietnamJournal Article20160331In this paper, we study the boundedness and persistence of the solutions, the global stability of the unique positive equilibrium point and the rate of convergence of a solution that converges to the equilibrium $E=(\bar{x},\ \bar{y})$ of the system of two difference equations of exponential form:<br />\begin{equation*}<br />x_{n+1}=\dfrac{a+e^{-(bx_n+cy_n)}}{d+bx_n+cy_n},\ y_{n+1}=\dfrac{a+e^{-(by_n+cx_n)}}{d+by_n+cx_n}<br />\end{equation*}<br />where $a,\ b,\ c,\ d$ are positive constants and the initial values $ x_0,\ y_0$ are positive real values.https://ijnaa.semnan.ac.ir/article_2317_fd9ef87284cd65c4c0051d2f2524b18c.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220A numerical scheme for space-time fractional advection-dispersion equation331343231910.22075/ijnaa.2017.1129.1249ENShahnamJavadiDepartment of Mathematics, Faculty of Mathematical Sciences and Computer, Kharazmi UniversityMostafaJaniDepartment of Mathematics, Faculty of Mathematical Sciences and Computer, Kharazmi University, Tehran, IranEsmailBabolianDepartment of Mathematics, Faculty of Mathematical Sciences and Computer, Kharazmi University, Tehran, Iran0000-0003-4033-3128Journal Article20160112In this paper, we develop a numerical resolution of the space-time fractional advection-dispersion equation. We utilize spectral-collocation method combining with a product integration technique in order to discretize the terms involving spatial fractional order derivatives that leads to a simple evaluation of the related terms. By using Bernstein polynomial basis, the problem is transformed into a linear system of algebraic equations. Matrix formulation, error analysis and order of convergence of the proposed method are also discussed. Some numerical experiments are presented to demonstrate the effectiveness of the proposed method and to confirm the analytic results.https://ijnaa.semnan.ac.ir/article_2319_26e1ee558045f8ddff548d3f3b47e268.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220On some generalisations of Brown's conjecture345349232010.22075/ijnaa.2016.2320ENBashir AhmadZargarDepartment of Mathematics, University of Kashmir, Hazratbal, Srinagar, IndiaManzoorAhmadDepartment of Mathematics, University of Kashmir, Hazratbal, Srinagar, IndiaJournal Article20150226Let $P$ be a complex polynomial of the form $P(z)=z\displaystyle\prod_{k=1}^{n-1}(z-z_{k})$,where $|z_k|\ge 1,1\le k\le n-1$ then $ P^\prime(z)\ne 0$. If $|z|<\dfrac {1}{n}$. In this paper, we present some interesting generalisations of this result.https://ijnaa.semnan.ac.ir/article_2320_2cb9da095415c881426e1ad3495e119c.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220Existence of three solutions for a class of fractional boundary value systems351362232110.22075/ijnaa.2017.1241.1296ENSamadMohseni KolagarDepartment of Mathematics, Faculty of Mathematical Sciences,
University of Mazandaran, Babolsar, IranGhasem A.AfrouziDepartment of Mathematics, Faculty of Mathematical Sciences,
University of Mazandaran, Babolsar, IranArminHadjianDepartment of Mathematics, Faculty of Basic Sciences, University of Bojnord, P.O. Box 1339, Bojnord 94531, IranJournal Article20160301In this paper, under appropriate oscillating behaviours of the nonlinear term, we prove some multiplicity results for a class of nonlinear fractional equations. These problems have a variational structure and we find three solutions for them by exploiting an abstract result for smooth functionals defined on a reflexive Banach space. To make the nonlinear methods work, some careful analysis of the fractional spaces involved is necessary. We also give an example to illustrate the obtained result.https://ijnaa.semnan.ac.ir/article_2321_5863ebd05baaf26bc703c4dde8cca5ba.pdfSemnan UniversityInternational Journal of Nonlinear Analysis and Applications2008-68227220161220On best proximity points for multivalued cyclic $F$-contraction mappings363374232210.22075/ijnaa.2017.2322ENKonrawutKhammahawongKing Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, ThailandParinyaSa NgiamsunthornDepartment of Mathematics,
Faculty of Science,
King Mongkut’s University of Technology Thonburi (KMUTT),
126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, Thailand.0000-0002-8129-0534PoomKumamKing Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok 10140, ThailandJournal Article20160605In this paper, we establish and prove the existence of best proximity points for multivalued cyclic $F$- contraction mappings in complete metric spaces. Our results improve and extend various results in literature.https://ijnaa.semnan.ac.ir/article_2322_a14950d6213380e677cbc576639e0d60.pdf