Browsing Cilt:70 Sayı:01 (2021) by Title
Now showing items 120 of 40

A classification of ( k , μ ) ′ almost Kenmotsu manifolds admitting Cotton tensor
(Ankara Üniversitesi Fen Fakültesi, 20210630)The object of the present paper is to classify ( k , μ ) ′ almost Kenmotsu manifolds admitting Cotton tensors. We characterize ( k , μ ) ′ almost Kenmotsu manifolds with vanishing and parallel Cotton ... 
A metric formula on a quotient space which is related to the sequence space Σ 2
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we first define an equivalence relation on the sequence space Σ 2 . Then we equip the quotient set Σ 2 / ∼ with a metric d 1 . We also determine an isometry map between the metric spaces ... 
A new lifetime distribution: transmuted exponential power distribution
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this study, a new statistical distribution called as Transmuted Exponential Power distribution using the quadratic rank transmutation map introduced by Shaw and Buckley [23,24] is suggested. The various mathematical and ... 
A study on the modeling and simulation for the motor unit action potential
(Ankara Üniversitesi Fen Fakültesi, 20210630)Electromyography (EMG) is a technique that gives information about the neuromuscular pattern and function which is commonlyused in the practice of neurology. With this method, the signals obtained from the muscle cells ... 
An approach for designing a surface pencil through a given geodesic curve
(Ankara Üniversitesi Fen Fakültesi, 20210630)In the present paper, we propose a new method to construct a surface interpolating a given curve as the geodesic curve of it. Also, we analyze the conditions when the resulting surface is a ruled surface. In addition, ... 
Best proximity point theorems for proximal bcyclic contractions on bmetric spaces
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we first introduce a new notion of the property (M_{C}) to improve and generalize the property (G_{C}). After that, we present two new concepts, proximal bcyclic contraction of first type and second type, ... 
Best proximity point theory on vector metric spaces
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we first give a new definition of ΩDedekind complete Riesz space (E,≤) in the frame of vector metric space (Ω,ρ,E) and we investigate the relation between Dedekind complete Riesz space and our new concept. ... 
Bipolar fuzzy soft Dmetric spaces
(Ankara Üniversitesi Fen Fakültesi, 20210630)The first aim to this paper is to introduce the notions of bipolar fuzzy soft metric space and bipolar fuzzy soft (D)metric space. In order to define these concepts, the concept of bipolar fuzzy soft points has been brought ... 
Bivariate Bernstein polynomials that reproduce exponential functions
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we construct Bernstein type operators that reproduce exponential functions on simplex with one moved curved side. The operator interpolates the function at the corner points of the simplex. Used function ... 
Bootstrap based multistep ahead joint forecast densities for financial intervalvalued time series
(Ankara Üniversitesi Fen Fakültesi, 20210630)This study presents two intervalvalued time series approaches to construct multivariate multistep ahead joint forecast regions based on two bootstrap algorithms. The first approach is based on fitting a dynamic bivariate ... 
Changeconstrained stochastic programming problem with normal, t and skew normal, skew t distributions
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, a change constrained optimization programming problem is studied under the assumption that the model coe¢ cients in the inequalities defned as random variables are independent and assumed to be Normal, t; ... 
Chebyshev type inequalities with fractional delta and nabla hsum operators
(Ankara Üniversitesi Fen Fakültesi, 20210630)The aim of this study is to establish new discrete inequalities for synchronous functions using fractional order delta and nabla hsum operators. We give examples to illustrate our results. 
Deferred Nörlund statistical relative uniform convergence and Korovkintype approximation theorem
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we define the concept of statistical relative uniform convergence of the deferred Nörlund mean and we prove a general Korovkintype approximation theorem by using this convergence method. As an application, ... 
Determination of a timedependent potential in a RayleighLove equation with nonclassical boundary condition
(Ankara Üniversitesi Fen Fakültesi, 20210630)Mathematical model of the longitudinal vibration of bars includes higherorder derivatives in the equation of motion under considering the effect of the lateral motion of a relatively thick bar. This paper considers such ... 
Differential geometric aspects of nonlinear Schrödinger equation
(Ankara Üniversitesi Fen Fakültesi, 20210630)The main scope of this paper is to examine the smoke ring (or vortex filament) equation which can be viewed as a dynamical system on the space curve in E³. The differential geometric properties the soliton surface accociated ... 
Dualcomplex generalized kHoradam numbers
(Ankara Üniversitesi Fen Fakültesi, 20210630)The purpose of this paper is to provide a broad overview of the generalization of the various dualcomplex number sequences, especially in the disciplines of mathematics and physics. By the help of dual numbers and ... 
Existence and decay of solutions for a higherorder viscoelastic wave equation with logarithmic nonlinearity
(Ankara Üniversitesi Fen Fakültesi, 20210630)The main goal of this paper is to study for the local existence and decay estimates results for a highorder viscoelastic wave equation with logarithmic nonlinerity. We obtain several results: Firstly, by using FeadoGalerkin ... 
Green's function for impulsive periodic solutions in alternately advanced and delayed differential systems and applications
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper we investigate the existence of the periodic solutions of a nonlinear impulsive differential system with piecewise alternately advanced and retarded arguments, in short IDEPCAG, that is, the argument is a ... 
HermiteHadamardFejér inequalities for double integrals
(Ankara Üniversitesi Fen Fakültesi, 20210630)In this paper, we first obtain HermiteHadamardFejer inequalities for coordinated convex functions in a rectangle from the plane R2. Moreover, we give the some refinement of these obtained HermiteHadamardFejer inequalities ... 
Implementation of computation formulas for certain classes of Apostoltype polynomials and some properties associated with these polynomials
(Ankara Üniversitesi Fen Fakültesi, 20210630)The main purpose of this paper is to present various identities and computation formulas for certain classes of Apostoltype numbers and polynomials. The results of this paper contain not only the λ ApostolDaehee ...