Güncel Gönderiler: Dergiler / Journals
Toplam kayıt 1091, listelenen: 61-80
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An estimate to functions with second derivatives in Hölder class by moduli of continuity and solutıon of Chandrasekhar’s white dwarf equation by Chebyshev wavelet
(Işık University Press, 2024-07)In this paper, modulus of continuity, second kind Chebyshev wavelet and Hölder class are studied. The moduli of continuity and approximations of functions whose second derivative belonging to H¨older class have been ... -
Absolute convergence with speed and matrix transforms
(Işık University Press, 2024-07)We define the notion of absolute convergence with speed, where the speed is defined by a monotonically increasing positive sequence λ. Also we present the notion of absolute λ-conservativity of a matrix, and the notion of ... -
Generation of graphs using hyper-edge replacement graph rewriting P system
(Işık University Press, 2024-07)Hyper-edge replacement graph grammar is considered a kernel in generating graphs and hypergraphs, and it has stood out enough to be noticed in recent years. George Paun proposed Membrane computing, frequently known as P ... -
Higher order Hermite-Fejér interpolation on the unit circle
(Işık University Press, 2024-07)The aim of this paper is to study the approximation of functions using a higher-order Hermite-Fej´er interpolation process on the unit circle. The system of nodes is composed of vertically projected zeros of Jacobi polynomials ... -
Average even divisor cordial labeling: a new variant of divisior cordial labeling
(Işık University Press, 2024-07)In the present paper, a new variant of divisor cordial labeling, named, an average even divisor cordial labeling, has been introduced. An average even divisor cordial labeling of a graph G* on n vertices, is defined by a ... -
Bipolar intuitionistic fuzzy matrices and its determinant
(Işık University Press, 2024-07)The theory of fuzzy sets has earned a lot of applications in science and engineering fields. Fuzzy sets include extensions such as intuitionistic and bipolar fuzzy sets. These concepts have now become significant in recent ... -
Existence and uniqueness results for a two-point nonlinear boundary value problem of Caputo fractional differential equations of variable order
(Işık University Press, 2024-07)In this article, we study the existence and uniqueness of solutions for a twopoint boundary value problem of Caputo fractional differential equation of variable order. The results are obtained by means of Banach’s and ... -
Uncertainty quantification of multivariate Gaussian process regression for approximating multivariate computer codes
(Işık University Press, 2024-07)Gaussian process regression (GPR) models have become popular as fast alternative models for complex computer codes. For complex computer code (CC) with multivariate outputs, a GPR model can be constructed separately for ... -
Growth of solutions of second order complex linear differential equations
(Işık University Press, 2024-07)In this paper, we study about order and hyper-order of growth of nontrivial solutions of f’’ + A(z)f’ + B(z)f = 0, where A(z) and B(z) are entire functions having some restrictions. These restrictions involve notions of ... -
Fibonacci range labeling on direct product of path and cycles graphs
(Işık University Press, 2024-07)The primary concept of direct product constitute from the idea of product graphs establish from Weichsel [13], where the direct product of two graphs is connected if and only if both are connected and are not bipartite. ... -
A Lattice structure of Z-soft covering based rough set and its application
(Işık University Press, 2024-07)The aim of this paper is to construct the lattice structure for Z-soft covering based rough set. First, we define an equivalence relation R’ on a universal set to obtain the equivalence classes induced by Z-soft covering-based ... -
Graceful coloring of ladder graphs
(Işık University Press, 2024-07)A graceful k-coloring of a non-empty graph G = (V, E) is a proper vertex coloring f : V (G) → {1, 2, ..., k}, k ≥ 2, which induces a proper edge coloring f*: E(G) → {1, 2, ..., k − 1} defined by f*(uv) = |f(u) − f(v)|, ... -
Further results on k-product cordial labeling
(Işık University Press, 2024-07)Let f be a map from V (G) to {0, 1, ..., k − 1} where k is an integer, 1 ≤ k ≤ |V (G)|. For each edge uv assign the label f(u)f(v)(mod k). f is called a k-product cordial labeling if |vf (i) − vf (j)| ≤ 1, and |ef (i) − ... -
Modular product of soft directed graphs
(Işık University Press, 2024-07)Soft set theory was proposed by D. Molodtsov as a mathematical framework for dealing with uncertain data. Many academics are now applying soft set theory in decision-making problems. In graph theory, a directed graph is a ... -
Switching of vertex on some graphs with geometric mean 3-equitable labeling
(Işık University Press, 2024-07)For a graph H with a vertex set P(H) and an edge set Q(H), if map g : P(H) → {0, 1, 2} and its induced map g*: Q(H) → {0, 1, 2} defined by g* (xy) =Γ√g(x)g(y)ꓶ; ∀xy ∈ Q(H), satisfies the absolute difference of the number ... -
Fuzzy two point boundary value problem with extension principle
(Işık University Press, 2024-07)In this study, we have propose a new method for solving fuzzy two point boundary value problem (FTPBVP) with certain types of fuzzy boundary conditions commonly encountered. We have investigate linear differential equations ... -
Comparative study on Hyers-Ulam-Rassias stability of pexider type functional equation in Banach spaces using direct method and fixed point method
(Işık University Press, 2024-07)In this paper, we have established a Hyers-Ulam-Rassias stability result of a pexider type functional equation. The work is in the framework of Banach spaces. The result is established using direct method as well as a fixed ... -
On diameter and girth of product of zero-divisor graphs
(Işık University Press, 2024-07)Graph theory has become a hot topic in Mathematics due to the gradual research done in graph theory. Product of graphs enables the combination or decomposition of its elemental structures. In graph theory there are four ... -
Starlikeness and convexity of integral operators involving Mittag-Leffler functions
(Işık University Press, 2024-07)In this paper, we shall find the order of starlikeness and convexity for integral operators Fαj ,βj ,λj ,ζ (z) = {ζ ʃ z0 tζ-1 ∏nj=1 (Eaj,βj(t)/t) 1/λj dt}1/ζ , where the functions Eαj ,βj are the normalized Mittag-Leffler ... -
A suitable way of normalizing new SI to make c and h unities
(Işık University Press, 2024-07)Yarman’s Approach, which serves as the basis of YARK gravitation theory (as abbreviated from “Yarman-Arık-Kholmetskii”), together with its recently developed extension QTG (Quantal Theory of Gravity), motivated us to ...
