Browsing Cilt:68 Sayı:01 (2019) by Title
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Fixed point results for Fexpansive mappings in ordered metric spaces
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this article, we prove some existence and uniqueness fixed point results for Fexpansive mappings in partially ordered metric spaces. We support the usability of our results adopting suitable examples. 
Fixed point theorems for single valued αψmappings in fuzzy metric spaces
(Ankara Üniversitesi, 20190201)This article is the forward result of αadmissible and (α,ψ)contractive mappings in fuzzy metric spaces. We establish new theorem for such contractions to find fixed point in fuzzy metric space. Our Theorem is generalizations ... 
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 ... 
Further study on the results of Sheremeta
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper we estimate some growth rates of composite entire and meromorphic functions in the light of their relative (p,q)th order and relative (p,q)th lower order which considerably extend some results of Sheremeta [14]. 
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. 
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 ... 
Growth estimates of entire functions with the help of their relative L^{∗}types and relative L^{∗} weak types
(Ankara Üniversitesi, 20190201)In this paper we attempt to prove some results related to the growth rates of entire functions on the basis of relative L^{∗}type and relative L^{∗}weak type of an entire function with respect to another entire function. 
Inequalities involving kChen invariants for submanifolds of Riemannian product manifolds
(Ankara Üniversitesi, 20190201)An optimal inequality involving the scalar curvatures, the mean curvature and the kChen invariant is established for Riemannian submanifolds. Particular cases of this inequality is reported. Furthermore, this inequality ... 
Influence of natural convection on stability of an inclined front propagation
(Ankara Üniversitesi Fen Fakültesi, 20190201)This research work may be considered as a continuation of a series of investigations concerning the influence of natural convection on stability of reaction fronts propagation. We consider an inclined propagating polymerization ... 
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 ... 
Iterated bootstrap procedure in individual bioequivalence
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, we propose an iterating principle in the bootstrap method to assess the individual bioequivalence under 2×4 randomized crossover design. The finite sample properties of the proposed algorithm are illustrated ... 
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 ... 
Local preHausdorff extended pseudoquasisemi metric spaces
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this paper, we characterize local preHausdorff extended pseudoquasisemi metric spaces and investigate the relationships between them. Finally, we show that local preHausdorff extended pseudoquasisemi metric spaces ... 
Mathematical Analysis and Numerical Simulations for the Cancer Tissue Invasion Model
(Ankara Üniversitesi, 20190201)Cancer cell invasion is one of the most important stages of metastasis. In this paper, the local existence and uniqueness of the cancer cell invasion model is proved using an iterative procedure. Moreover the numerical ... 
Maximum LqLikelihood Estimation for the parameters of MarshallOlkin Extended Burr XII Distribution
(Ankara Üniversitesi, 20190201)MarshallOlkin extended Burr XII (MOEBXII) distribution is proposed by AlSaiari et al. (2014) to obtain a more flexible family of distributions. Some estimation methods like maximum likelihood, Bayes and M estimations ... 
Multipoint selfadjoint quasidifferential operators for first order
(Ankara Üniversitesi Fen Fakültesi, 20190201)In the present paper, the aim is to described all selfadjoint extensions of the minimal operator generated by first order linear symmetric multipoint quasidifferential operator expression in the direct sum of weighted ... 
Newinequalities in terms of operator mconvex functions in Hilbert space
(Ankara Üniversitesi Fen Fakültesi, 20190201)In this study, we obtained some new inequalities via operator mconvex functions. Afterwards, we generalized and revised some theorems and lemmas in operator mconvex functions. 
Null Curves of Constant Breadth in Minkowski 4Space
(Ankara Üniversitesi, 20190201)In this paper, we define null curves of constant breadth in Minkowski 4space and obtain a characterization of these curves. Also we give an example for such curves. 
Numerical Solutions of Time Fractional Kortewegde Vries Equation and Its Stability Analysis
(Ankara Üniversitesi, 20190201)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 biunivalent functions satisfying subordinate conditions
(Ankara Üniversitesi Fen Fakültesi, 20190201)The purpose of our present paper is to introduce a new subclass of biunivalent functions associated with pseudostarlike function with Sakaguchi type functions and to determine the coefficient estimates a₂ and a₃ for ...