Browsing Cilt:68 Sayı:02 (2019) by Issue Date
Now showing items 120 of 90

On achromatic number of central graph of some graphs
(Ankara Üniversitesi Fen Fakültesi, 20190801)The concept of coloring a graph will lead to the definition of a complete n coloring of a graph G which results the achromatic number ψ(G) where the maximum number of colors required for the points of G in which every ... 
Equitable edge chromatic number of P_{m}⊗S_{n}⁰ and S_{m}⁰⊗S_{n}⁰
(Ankara Üniversitesi Fen Fakültesi, 20190801)The equitable edge chromatic number is the minimum number of colors required to color the edges of a graph G and satisfies the criterion, if for each vertex v∈V(G), the number of edges of any one color incident with v ... 
On the inverse problem for finite dissipative Jacobi matrices with a rankone imaginary part
(Ankara Üniversitesi Fen Fakültesi, 20190801)This paper deals with the inverse spectral problem consisting in the reconstruction of a finite dissipative Jacobi matrix with a rankone imaginary part from its eigenvalues. Necessary and sufficient conditions are formulated ... 
Coefficient estimates for a new subclass of mfold symmetric analytic biunivalent functions
(Ankara Üniversitesi Fen Fakültesi, 20190801)Considering a new subclass of mfold symmetric analytic biunivalent functions, we determine estimates the coefficient bounds for the TaylorMaclaurin coefficients a_{m+1} and a_{2m+1} of the functions in this class. ... 
A note on dominator chromatic number of line graph and jump graph of some graphs
(Ankara Üniversitesi Fen Fakültesi, 20190801)A dominator coloring is a coloring of the vertices of a graph such that every vertex is either alone in its color class or adjacent to all vertices of at least one other color class. In this paper, we obtain the dominator ... 
A note on harmonic maps of statistical manifolds
(Ankara Üniversitesi Fen Fakültesi, 20190801)We show an existence and uniqueness result for a class of maps from a flat statistical manifold into a Riemannian manifold in a given homotopy class when the target Riemannian manifold is of negative sectional curvature ... 
Vertex magic total labeling of middle and total graph of cycle
(Ankara Üniversitesi Fen Fakültesi, 20190801)A vertex magic total labeling is a bijection from the union of the vertex set and edge set to the consecutive integers 1,2,3,....,v+e with the property that for every u in the vertex set, the sum of the label of u and the ... 
On Borel convergence of double sequences
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this paper, we introduce the concept of (Ber)convergence of bounded double sequences in the Fock space F(C²). We show that every (Ber)convergent double sequence is Borel convergent. Namely, we prove the following ... 
On generalized taxicab metric in three dimensional space
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this paper, we define the generalized taxicab distance function in three dimensional space, which includes the taxicab distance function as a special case, and we show that three dimensional generalized taxicab distance ... 
fBiminimal submanifolds of generalized space forms
(Ankara Üniversitesi Fen Fakültesi, 20190801)We study fbiminimal submanifolds in generalized complex space forms and generalized Sasakian space forms. Then, we analyze fbiminimal submanifolds in these spaces. Finally, we consider fbiminimal integral submanifolds ... 
The ToppLeone generalized odd loglogistic family of distributions: properties, characterizations and applications
(Ankara Üniversitesi Fen Fakültesi, 20190801)A new family of distributions called the ToppLeone generalized odd loglogisticG family is introduced and studied. We provide some mathematical properties of the new family including ordinary and incomplete moments, ... 
A numerical solution study on singularly perturbed convectiondiffusion nonlocal boundary problem
(Ankara Üniversitesi Fen Fakültesi, 20190801)This important numerical method is given for the numerical solution of singularly perturbed convectiondiffusion nonlocal boundary value problem. First, the behavior of the exact solution is analyzed, which is needed for ... 
The mean remaining strength of parallel systems in a stressstrength model based on exponential distribution
(Ankara Üniversitesi Fen Fakültesi, 20190801)The mean remaining strength of any coherent system is one of the important characteristics in stressstrength reliability. It shows that the system on the average how long can be safe under the stress. In this paper, we ... 
Improved Hermite Hadamard type inequalities for harmonically convex functions via Katugampola fractional integrals
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this paper,we proved three new Katugampola fractional Hermite Hadamard type inequalities for harmonically convex functions by using the left and the right fractional integrals independently. One of our Katugampola frac ... 
Equilibrium and Stability Analysis of TakagiSugeno Fuzzy Delayed CohenGrossberg Neural Networks
(Ankara Üniversitesi Fen Fakültesi, 20190801)This paper carries out an investigation into the problem of the global asymptotic stability of the class of TakagiSugeno (TS) fuzzy delayed CohenGrossberg neural networks with discrete time delays. A new sufficient ... 
Degree based topological invariants of splitting graph
(Ankara Üniversitesi Fen Fakültesi, 20190801)Topological invariants are the graph theoretical tools to the theoretical chemists, that correlates the molecular structure with several chemical reactivity, physical properties or biological activity numerically. A function ... 
Investigation of the dependence structure in seismic hazard analysis: an application for Turkey
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this study, using the earthquake occurrence data (Richter magnitude is equal to 4 or greater than 4 in the years 19012014) of the areas limited by 39.5°42° N latitudes and 26°45° E longitudes of North Anatolia and ... 
Some Tauberian theorems for weighted means of double integrals
(Ankara Üniversitesi Fen Fakültesi, 20190801)Let p(x) and q(y) be nondecreasing continuous functions on [0,∞) such that p(0)=q(0)=0 and p(x),q(y)→∞ as x,y→∞. For a locally integrable function f(x,y) on R₊²=[0,∞)×[0,∞), we denote its double integral by F(x,y)=∫₀^{x} ... 
On the evolute offsets of ruled surfaces using the Darboux frame Yıl 2019, Cilt 68, Sayı 2, 1256  1264, 01.08.2019
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this study, using Darboux frame {T,g,n} of ruled surface ϕ(s,v), the evolute offsets ϕ^{∗}(s,v) with Darboux frame {T^{∗},g^{∗},n^{∗}} of ϕ(s,v) are defined. Characteristic properties of ϕ^{∗}(s,v) as a striction curve, ... 
Spectral expansion of SturmLiouville problems with eigenvaluedependent boundary conditions
(Ankara Üniversitesi Fen Fakültesi, 20190801)In this paper, we consider the operator L generated in L₂(R₊) by the differential expression l(y)=y′′+q(x)y,x∈R₊:=[0,∞) and the boundary condition ((y′(0))/(y(0)))=α₀+α₁λ+α₂λ², where q is a complex valued ...