Güncel Gönderiler: Dergiler / Journals
Toplam kayıt 1377, listelenen: 961-980
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On the convergence of (p, q)-Bernstein operators of the rational functions with poles in [0,1]
(Işık University Press, 2020-01-11)In the present paper, we obtain the approximation results of (p, q)-Bernstein operators B?p,q(h; x) to a rational function for q > p > 1 and investigate convergence properties of B?p,q(h; x) for the function h(x) = (x ? ... -
A theorem on summability factors for the Nörlund method for double series in ultrametric fields
(Işık University Press, 2020)Throughout this paper, K denotes a complete, non-trivially valued, ultrametric (or non-archimedean) field. 4-dimensional infinite matrices, double sequences and double series have entries in K. In this paper, we prove a ... -
On operator equation AXB-CXD = CE via subnormality in Hilbert spaces
(Işık University Press, 2020-05-04)The purpose of this study is to give the necessary and sufficient conditions of the existence of solution for an operator equation of Sylvester type with subnormality of bounded operators in finite dimension complex separable ... -
New concepts on m-polar interval-valued intuitionistic fuzzy graph
(Işık University Press, 2020)Theoretical concepts of graphs are highly utilized by computer science applications. Especially in research areas of computer science such as data mining, image segmentation, clustering, image capturing and networking. The ... -
Existence of a positive solution for superlinear Laplacian equation via mountain pass theorem
(Işık University Press, 2020-04-07)In this paper, we are going to show a nonlinear laplacian equation with the Dirichlet boundary value as follow has a positive solution: ( −∆u + V (x)u = g(x, u) x ∈ Ω u = 0 x ∈ ∂Ω where, ∆u = div(∇u) is the laplacian ... -
Study of subclasses of starlike and convex functions
(Işık University Press, 2020)In this article, we introduce new subclasses of starlike and convex functions by using a new differential operator defined in the open unit disk U. We study the geometric properties of such subclasses of starlike and convex ... -
The eigenvalue problem for fuzzy diffusion operators
(Işık University Press, 2020)This paper deals with the eigenvalues of a boundary value problem for a second order fuzzy differential equation. We consider the fuzzy differential operator and give the properties of the eigenvalues of the problem for ... -
Total colorings of core-satellite, cocktail party and modular product graphs
(Işık University Press, 2020)A total coloring of a graph G is a combination of vertex and edge colorings of G. In other words, is an assignment of colors to the elements of the graph G such that no two adjacent elements (vertices and edges) receive a ... -
Absolute index Nörlund summability of improper integrals
(Işık University Press, 2020)Ozgen (Int. J. Anal. Appl., 11 (2016), 19-22) introduced |C, 1|k (k ? 1) integrability of improper integrals. In this paper, we have introduced the notion of |N, pn, ?|k-summability of improper integrals and established a ... -
Mathematical modelling of one dimensional temperature distribution as a function of laser intensity on carbon fiber reinforced poly(Ether-Ether-Ketone)-(PEEK) composite
(Işık University Press, 2020-03-26)Poly(ether-ether-ketone) (PEEK) is used in many area especially structural and industrial applications due to it has superior mechanical, chemical and thermal properties. Besides excellent electrical and thermal properties, ... -
Bounds for the sum of cubes of vertex degrees of splice graphs
(Işık University Press, 2020)Some chemically interesting graphs can be derived from simpler graphs by some graph operations. One of the most relevant among these interesting graphs is named as splice graphs. They are related to RNA sequencing and ... -
Laceability properties in edge tolerant corona product graphs
(Işık University Press, 2020)A connected graph G is termed Hamiltonian-t-laceable if there exists in it a Hamiltonian path between every pair of vertices u and v with the property d(u, v) = t, 1 ≤ t ≤ diam(G), where t is a positive integer. The corona ... -
Korteweg-de Vries-Burgers (KDVB) equation with Atangana-Baleanu derivative with fractional order
(Işık University Press, 2020-02-13)In this work, we examine the Korteweg–de Vries–Burgers equation with two perturbation’s levels to the concepts of fractional differentiation with no singularity. The Korteweg–de Vries–Burgers equation was constructed using ... -
Edge irregular reflexive labeling for star, double star and caterpillar graphs
(Işık University Press, 2020)A graph labeling is an algorithm that assignment the labels, traditionally represented by integers, to the edges or vertices, or both, of a network(graph) G. Formally, given a graph G = (V, E), a vertex labeling is a ... -
A note on some new Pδ-transforms of ₂F₂ generalized hypergeometric functions
(Işık University Press, 2020-04-24)In this note, we aim to establish Pδ-transforms of ₂F₂ generalized hypergeometric functions in terms of gamma functions. The results are established from the generalized classical summation theorems due to Gauss’s second, ... -
An application of (p, q)-calculus in harmonic univalent functions
(Işık University Press, 2020)The main aim of this paper is to define a (p, q)-multiplier transformation for harmonic functions. Using that we obtain coefficient inequality, extreme points, distortion theorem and covering results for the new subclass ... -
The asymptotic behavior of solutions of the system of the differential equations partially solved relatively to the derivatives with non-square matrices
(Işık University Press, 2020)The systems of ordinary differential equations, which are partially resolved relatively to the derivatives, were considered in case of a removable singularity and in case of a pole. The theorems on the existence of at least ... -
On a class of sakaguchi functions related to Bernoulli lemniscate and modified sigmoid function
(Işık University Press, 2020)The aim of this investigation is to provide further results on a class of Sakaguchi functions related to Bernoulli Lemniscate and modified sigmoid function for the class SL(s, t, Φm,n). Early few coefficient bounds of f(z) ... -
Global existence and nonexistence of solutions for a klein-gordon equation with exponential type nonlinear term
(Işık University Press, 2020)In this paper, the global existence and nonexistence of solutions for a KleinGordon equation, appearing in a variety of physical situations, with exponential type source term and supercritical initial energy (E(0) > d) are ... -
On the solutions of some nonlinear fredholm integral equations in topological Hölder spaces
(Işık University Press, 2020-03-18)In this article, we show that the existence theorem for fredholm type quadratic integral equation in the space of functions satisfying H¨older the condition, based on the classical Schauder fixed point theorem, has new ...
