Browsing Matematik Bölümü Makale Koleksiyonu by Subject "Mathematics"
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1Dimensional Harnack Estimates
(Amer Inst Mathematical SciencesAims, 2016)Let u be a nonnegative supersolution to a 1dimensional singular parabolic equation of pLaplacian type (1 < p < 2). If u is bounded below on a timesegment {y} x (0, T] by a positive number M, then it has a power like ... 
A Coanalytic Menger Group That Is Not SigmaCompact
(Scientific Technical Research Council TurkeyTubitak, 2018)Under V = L we construct coanalytic topological subgroups of reals, demonstrating that even for definable groups of reals, selection principles may differ. 
A Generalization of J  Quasipolar Rings
(Univ Miskolc Inst Math, 2017)In this paper we introduce a class of quasipolar rings which is a generalization of Jquasipolar rings. Let R be a ring with identity. An element a is an element of R is called deltaquasipolar if there exists p(2) = p is ... 
A Generalization of Projective Covers
(Academic Press Inc Elsevier Science, 2008)Let M be a left module over a ring R and I an ideal of R. We call (P, f) a projective Icover of M if f is an epimorphism from P to M, P is projective, Ker f subset of I P, and whenever P = Ker f + X, then there exists a ... 
A Generalization Of Rickart Modules
(Belgian Mathematical Soc Triomphe, 2014)Let R be an arbitrary ring with identity and M a right Rmodule with S = End(R) (M). In this paper we introduce piRickart modules as a generalization of Rickart modules. piRickart modules are also a dual notion of dual ... 
A Note on Ads* Modules
(Springer Basel Ag, 2012)We study the ADS* modules which are the dualizations of ADS modules studied by Alahmadi et al. ( J Algebra 352: 215222, 2012). Mainly we prove that an amply supplemented module M is ADS* if and only if M1 and M2 are ... 
A Note on the Homotopy Analysis Method
(PergamonElsevier Science Ltd, 2010)The present work is devoted to using an analytic approach, namely the homotopy analysis method, to obtain convergent series solutions of strongly nonlinear problems. On the basis of the homotopy derivative concept described ... 
A Novel Condition to the Harmonic of the Velocity Vector Field of a Curve In RN
(Hindawi Ltd, 2017)In this paper, a condition is obtained for the harmonic of the velocity vector field in the curve family passing through the fixed p and q points in Rn It shows that the condition can be expressed in terms of the curvature ... 
A Novel Traveling Wave Solution for Ostrovsky Equation Using ExpFunction Method
(PergamonElsevier Science Ltd, 2009)In this paper, we predict a new traveling wave solution of Ostrovsky equation by using He's Expfunction method. The method is straightforward and concise and its application shows an imminent prospective for the nonlinear ... 
A Strong Global Attractor for the 3D Wave Equation with Displacement Dependent Damping
(PergamonElsevier Science Ltd, 2010)We prove that if the displacement coefficient of the damping of the 3D wave equation is a positive constant on the interval (l, l), for large enough l > 0, then this equation has a strong global attractor in H(0)(1)(Omega) ... 
A Subclass of AnalyticFunctions Defined By Using Certain Operators of Fractional Calculus
(PergamonElsevier Science Ltd, 1995)Making use of certain operators of fractional calculus, we introduce a new class Fdelta(n,lambda,alpha) of functions which are analytic in the open unit disk mu and obtain a necessary and sufficient condition for a function ... 
A Textural View of The Distinction Between Uniformities and QuasiUniformities
(Elsevier Science Bv, 2006)In this paper the authors consider the interplay between diuniformities on a texture and a complementation on that texture. It is shown that with each diuniformity corresponds a second diuniformity, called its complement. ... 
AlmostPerfect Modules
(Cambridge Univ Press, 2010)We call a module M almost perfect if every Mgenerated flat module is Mprojective. Any perfect module is almost perfect. We characterize almostperfect modules and investigate some of their properties. It is proved that ... 
An Alternative Perspective on Injectivity of Modules
(Academic Press Inc Elsevier Science, 2011)Given modules M and N, M is said to be Nsubinjective if for every extension K of N and every homomorphism : N M there exists a homomorphism phi : K > M such that phi vertical bar N = phi. For a module M, the subinjectivity ... 
An Analytic ShootingLike Approach For The Solution of Nonlinear Boundary Value Problems
(PergamonElsevier Science Ltd, 2011)In this paper a novel approach is presented for an analytic approximate solution of nonlinear differential equations with boundary conditions. By converting the nonlinear problem into an initial value form, a shootinglike ... 
An Asymptotic Investigation Into The Stabilization Effect Of Suction In The RotatingDisk Boundary Layer Flow
(PergamonElsevier Science Ltd, 2007)The suction effects in the threedimensional boundary layer flow due to a rotating disk are analyzed from the linear stability point of view making use of the asymptotic structure of the suction mean velocity profiles of ... 
An Extension of the Incomplete Beta Function For Negative Integers
(Academic Press Inc Elsevier Science, 2008)The incomplete beta function Bx(a, b) is defined for a, b > 0 and 0 < x < 1. Its definition can be extended, by regularization, to negative noninteger values of a and b. In this paper we define the incomplete beta function ... 
An Optimal Variational Iteration Method
(PergamonElsevier Science Ltd, 2011)The variational iteration method is studied in the present work. The classical variational iteration method is improved and extended by introducing a new concept of a convergence accelerating parameter. A rigorous approach ... 
Analytic Approximate Solutions of Parameterized Unperturbed And Singularly Perturbed Boundary Value Problems
(Elsevier Science Inc, 2011)A novel approach is presented in this paper for approximate solution of parameterized unperturbed and singularly perturbed twopoint boundary value problems. The problem is first separated into a simultaneous system regarding ... 
Asymptotic Behaviour of a Class of Nonlinear Functional Differential Equations of Third Order
(PergamonElsevier Science Ltd, 2001)This paper deals with nonoscillatory behaviour of solutions of thirdorder nonlinear functional differential equations of the form y''' + p(t)y' + q(t)F(y(g(t))) = 0. It has been shown that under certain conditions on ...