Browsing Cilt:68 Sayı:01 (2019) by Issue Date
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On commutativity of prime nearrings with multiplicative generalized derivation
(Ankara Üniversitesi, 20190201)In the present paper, we shall prove that 3prime nearring N is commutative ring, if any one of the following conditions are satisfied: (i) f(N)⊆Z, (ii) f([x,y])=0, (iii) f([x,y])=±[x,y], (iv) f([x,y])=±(xoy), (v) ... 
On VectorValued Operator Riesz Sequence Spaces
(Ankara Üniversitesi, 20190201)In this paper we introduce vectorvalued Riesz sequence spaces R₀^{q}(X), R_{c}^{q}(X), R_{∞}^{q}(X) and R₁^{q}(X) and determine their KötheToeplitz duals. Also, we characterize some matrix classes. 
A Study on a Partially Null Curve in E₂⁴
(Ankara Üniversitesi, 20190201)In this paper, we study with Frenet equations which are given in [3] of a partially null curve in Semi Euclidean 4space E₂⁴ with index 2. By using the Frenet equations, we give some theorem and corollary. A characterization ... 
Classical Way of Looking at the LaneEmden Equation
(Ankara Üniversitesi, 20190201)In this article, the wellknown approximate and analytical solutions of the LaneEmden equation applying Taylor series expansion are derived. To the best of author's knowledge nobody has overcome the singularity of the ... 
Global behavior of a threedimensional system of difference equations of order three
(Ankara Üniversitesi, 20190201)In this paper, we investigate the global behavior of the positive solutions of the system of difference equations u_{n+1}=((α₁u_{n1})/(β₁+γ₁v_{n2}^{p})), v_{n+1}=((α₂v_{n1})/(β₂+γ₂w_{n2}^{q})), w_{n+1}=((α₃w_{n1 ... 
Flat Strong δcovers of Modules
(Ankara Üniversitesi, 20190201)We say that a ring R is right generalized δsemiperfect if every simple right Rmodule is an epimorphic image of a flat right Rmodule with δsmall kernel. This definition gives a generalization of both right δsemiperfect ... 
Coefficient estimates for biconcave functions
(Ankara Üniversitesi, 20190201)In this study,a new class C_{Σ}^{p,q}(α) of analytic and biconcave functions were presented in the open unit disc. The coefficients estimates on the first two TaylorMaclaurin coefficients a₂ and a₃ were found for ... 
Generalization of (αF_{d})contraction on quasimetric space
(Ankara Üniversitesi, 20190201)In this paper, we introduce the concept of generalized (αF_{d})contraction and give some fixed point results in quasi metric spaces with different types of completeness. 
kautocorrelation and its applications
(Ankara Üniversitesi Fen Fakültesi, 20190201)The standard autocorrelation measures similarities between a binary sequence and its any shifted form. In this paper, we introduce the concept of the kautocorrelation of a binary sequence as a generalization of the standard ... 
Eigenvalues and scattering properties of difference operators with impulsive condition
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this work, we are concerned with difference operator of second order with impulsive condition. By the help of a transfer matrix M, we present scattering function of corresponding operator and examine the spectral ... 
Some Geometric Characterizations of a Fractional Banach Set
(Ankara Üniversitesi Fen Fakültesi, 20190201)This paper is devoted to investigate the modular structure of a fractional Banach set of sequences and prove that this set is reflexive and convex and it possesses uniform Opial, (β), (L) and (H) properties. The convexity ... 
Best bound for λ pseudo starlike functions
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, we obtain sharp upper bound to the second Hankel determinant for the functions belong to the class of λ pseudo starlike functions, an interesting sub class of univalent functions defined in the open unit ... 
The Minkowski's inequalities utilizing newly defined generalized fractional integral operators
(Ankara Üniversitesi Fen Fakültesi, 20190201)Motivated by the recent generalized fractional integral operators proposed by Tunc et. al. <cite>tunc</cite>, we establish a generalization of the reverse Minkowski's inequalities. Within this context, we provide new upper ... 
On a new variation of injective modules
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, we provide various properties of GE and GEEmodules, a new variation of injective modules. We call M a GEmodule if it has a gsupplement in every extension N and, we call also M a GEEmodule if it has ample ... 
On the spectrum and Hilbert Schimidt properties of generalized Rhaly matrices
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, we show that the multiplications of some generalized Rhaly operators are Hilbert Schimidt operators.We also calculate the spectrum and essential spectrum of a special generalized Rhaly matrices on the Hardy ... 
A data science study for determining food quality: an application to wine
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, wine quality is investigated based on physicochemical ingredients which include fixed acidity, volatile acidity, citric acid, residual sugar, chloride, free sulfur dioxide, total sulfur dioxide, density, pH, ... 
Intersection graphs of coideals of semirings
(Ankara Üniversitesi Fen Fakültesi, 20190201)Let R be a semiring with identity. In this paper, we introduce the intersection graph of coideals, denoted by G(R). The vertices of G(R) are nontrivial coideals of R, and two distinct vertices I and J are adjacent if ... 
On the linear codes over the ring Z₄+v₁Z₄+...+v_{t}Z₄
(Ankara Üniversitesi Fen Fakültesi, 20190201)Some results on linear codes over the ring Z₄+uZ₄+vZ₄,u²=u,v²=v,uv=vu=0 in [6,7] are generalized to the ring D_{t}=Z₄+v₁Z₄+...+v_{t}Z₄,v_{i}²=v_{i},v_{i}v_{j}=v_{j}v_{i}=0 for i≠j,1≤i,j≤t. A Gray map Φ_{t} from D_{t}ⁿ to ... 
Solutions of the radial Schrödinger equation in hypergeometric and discrete fractional forms
(Ankara Üniversitesi Fen Fakültesi, 20190201)The purpose of this present paper is to obtain the hypergeometric and discrete fractional solutions of the radial Schrödinger equation by using the nabla discrete fractional calculus operator. 
On a type of αcosymplectic manifolds
(Ankara Üniversitesi Fen Fakültesi, 20190201)The object of this paper is to study αcosymplectic manifolds admitting a W₂curvature tensor.