sherpa/romeo

Now showing items 47-66 of 98

    • Newinequalities in terms of operator m-convex functions in Hilbert space 

      Ünlüyol, Erdal; Erdaş, Yeter; Salaş, Selen (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this study, we obtained some new inequalities via operator m-convex functions. Afterwards, we generalized and revised some theorems and lemmas in operator m-convex functions.
    • Null Curves of Constant Breadth in Minkowski 4-Space 

      Altunkaya, Bülent; Aksoyak, Ferdağ Kahraman (Ankara Üniversitesi, 2019-02-01)
      In this paper, we define null curves of constant breadth in Minkowski 4-space and obtain a characterization of these curves. Also we give an example for such curves.
    • Numerical Solutions of Time Fractional Korteweg--de Vries Equation and Its Stability Analysis 

      Yokuş, Asıf (Ankara Üniversitesi, 2019-02-01)
      In this study, the fractional derivative and finite difference operators are analyzed. The time fractional KdV equation with initial condition is considered. Discretized equation is obtained with the help of finite difference ...
    • On a new subclass of bi-univalent functions satisfying subordinate conditions 

      Altınkaya, Şahsene; Mazı, Emeka (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      The purpose of our present paper is to introduce a new subclass of bi-univalent functions associated with pseudo-starlike function with Sakaguchi type functions and to determine the coefficient estimates |a₂| and |a₃| for ...
    • On a new variation of injective modules 

      Türkmen, Ergül; Türkmen, Burcu Nişancı; Pancar, Ali; Nebiyev, Celil (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we provide various properties of GE and GEE-modules, a new variation of injective modules. We call M a GE-module if it has a g-supplement in every extension N and, we call also M a GEE-module if it has ample ...
    • On a type of α-cosymplectic manifolds 

      Beyendi, Selahattin; Ayar, Gülhan; Aktan, Nesip (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      The object of this paper is to study α-cosymplectic manifolds admitting a W₂-curvature tensor.
    • On almost α-para-Kenmotsu manifolds satisfyıng certain conditions 

      Erken, İrem Küpeli (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we study some remarkable properties of almost α-para-Kenmotsu manifolds. We consider projectively flat, conformally flat and concircularly flat almost α-para-Kenmotsu manifolds (with the η-parallel tensor ...
    • On Andersson's inequality for yyperbolically convex functions 

      FARİED, Nashat; ALİ, Mohamed S. S; YEHİA, Zeinab M. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we use Andersson's Inequality for ordinary convex functions to prove a similar inequalities concerning hyperbolically convex functions.
    • On Approximation Properties of Two Variables of Modified Kantorovich-Type Operators 

      Özhavzalı, Müzeyyen; Olgun, Ali (Ankara Üniversitesi, 2019-02-01)
      In the present paper, we introduce certain modification of Szász-Mirakyan-Kantorovich-type operators in polynomial weighted spaces of continuous functions of two variables. Then we research some approximation properties ...
    • On b-coloring of central graph of some graphs 

      Kalpana, M.; Vijayalakshmi, D. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      The b-chromatic number of G, denoted by ϕ(G), is the maximum k for which G has a b-coloring by k colors. A b-coloring of G by k colors is a proper k-coloring of the vertices of G such that in each color class i there exists ...
    • On commutativity of prime near-rings with multiplicative generalized derivation 

      Bedir, Zeliha; Gölbaşı, Öznur (Ankara Üniversitesi, 2019-02-01)
      In the present paper, we shall prove that 3-prime near-ring 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 Complex Modified Genuine Szász-Durrmeyer-Stancu Operators 

      Çetin, Nursel (Ankara Üniversitesi, 2019-02-01)
      In this paper, we introduce complex modified genuine Szász-Durrmeyer-Stancu operators to improve the results obtained in [4] and present overconvergence properties of these operators. We obtain some estimates on the rate ...
    • On irregular colorings of double wheel graph families 

      Rohini, A.; Venkatachalam, M. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      An assignment of colors to the vertices of a graph, so that no two adjacent vertices get the same color is called a proper coloring. An irregular coloring of a graph is a proper vertex coloring that distinguishes vertices ...
    • On minimal free resolution of the associated graded rings of certain monomial curves : New proofs in A⁴ 

      Zengin, Esra Emine; Mete, Pınar (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this article, even if it is known for general case in <cite>sharifan-nahandi</cite>, we give the explicit minimal free resolution of the associated graded ring of certain affine monomial curves in affine 4-space based ...
    • On New Hermite-Hadamard-Fejér type inequalities for harmonically quasi convex functions 

      Turhan, Sercan; İşcan, İmdat (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      In this paper, we give the theorems and results for the trapezoidal and midpoint type inequality of new Hermite-Hadamard-Fejér for harmonically-quasi convex functions via fractional integrals.
    • On new subclasses of bi-univalent functions defined by generalized Sălăgean differential operator 

      Toklu, Evrim; Aktaş, İbrahim; Sağsöz, Fatma (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      The aim of this investigation is to introduce two new subclasses of the class σ related with the generalized Sălăgean differential operator and find estimates on the coefficients |a₂| and |a₃| for functions in these new ...
    • On r- dynamic coloring of the family of bistar graphs 

      NANDİNİ, G.; VENKATACHALAM, M.; GOWRİ, S. (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      An r-dynamic coloring of a graph G is a proper coloring c of the vertices such that |c(N(v))|≥min{r,d(v)}, for each v∈V(G). The r-dynamic chromatic number of a graph G is the minimum k such that G has an r-dynamic coloring ...
    • On the Construction of Generalized Bobillier Formula 

      Erişir, Tülay; Güngör, Mehmet Ali; Ersoy, Soley (Ankara Üniversitesi, 2019-02-01)
      In this study, we consider the generalized complex number system C_{p}={x+iy:x,y∈R,i²=p∈R} corresponding to elliptical complex number, parabolic complex number and hyperbolic complex number systems for the special cases ...
    • On the Geometry of the Tangent Bundle With Vertical Rescaled Metric 

      DİDA, Hamou Mohammed; HATHOUT, Fouzi; AZZOUZ, Abdelhalim (Ankara Üniversitesi, 2019-02-01)
      Let (M,g) be a n-dimensional smooth Riemannian manifold. In the present paper, we introduce a new class of natural metrics denoted by G^{f} and called the vertical rescaled metric on the tangent bundle TM. We calculate its ...
    • On the linear codes over the ring Z₄+v₁Z₄+...+v_{t}Z₄ 

      Dertli, Abdullah; Cengellenmiş, Yasemin (Ankara Üniversitesi Fen Fakültesi, 2019-02-01)
      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 ...