Isik University Institutional Repository: Recent submissions
Now showing items 521-540 of 2754
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Solving inverse partial differential equations problems by using teaching learning based optimization algorithm
(Işık University Press, 2024-04)In this paper, a numerical approach is combined with teaching learning based optimization algorithm (TLBO) to solve problems of inverse partial differential equations. The most important point in the way we have presented ... -
Geodetic parameters in tree derived architectures
(Işık University Press, 2024-04)A geodetic cover of a graph G refers to a subset of vertices of G that covers all the vertices of G using the shortest paths between the vertices in the set and the cardinality of a minimum geodetic cover is the geodetic ... -
2-ODD labeling of graphs using some graph operations
(Işık University Press, 2024-04)2-odd labeling assigns distinct integers to the nodes of a graph G(V, E) in such a manner, that the positive difference of adjacent nodes is either 2 or an odd integer, 2k ± 1, k ? N. So, G is a 2-odd graph if and only if ... -
Permutations with non-decreasing transposition arrays and pattern avoidance
(Işık University Press, 2024-04)We give some results about a bijection associating each permutation with a subexcedant function (i.e., a function f : [n] ? [n] such that f(i) ? i, 1 ? i ? n). This function is related to a particular decomposition of the ... -
On edge irregularity strength of ladder related graphs
(Işık University Press, 2024-04)For a simple graph G, a vertex labeling ? : V (G) ? {1, 2, . . . , k} is called k-labeling. The weight of an edge xy in G, written w?(xy), is the sum of the labels of end vertices x and y, i.e., w?(xy) = ?(x) + ?(y). A ... -
Binary ?ech soft closure spaces
(Işık University Press, 2024-04)In this paper the notion of binary ?ech soft closure space which is defined over two initial universe sets with fixed sets of parameters is introduced and studied. This space extends and generalizes ?ech soft closure space. ... -
On the norms of r-circulant matrices involving balancing and Lucas-balancing numbers
(Işık University Press, 2024-04)In this article, we investigate the r-circulant matrices B[r] and C[r] involving the balancing and Lucas-balancing numbers respectively with arithmetic indices. For matrices B[r] and C[r], we establish the direct formula ... -
On almost convergence of fuzzy variables
(Işık University Press, 2024-04)In this paper, within framework credibility theory, we examine several notions of convergence and almost convergence of fuzzy variable sequences. We investigate relations between these notions. Utilizing fuzzy variables, ... -
A novel simple 5D hyperchaotic system derived from the 3D Sprott C system
(Işık University Press, 2024-04)A novel simple 5D hyperchaotic system with two non-hyperbolic equilibria points is presented. The proposed system is designed by coupling between a 3D Sprott C system and a 2D linear system via a coupling strategy. Compared ... -
Generalization of Picture Fuzzy Matrix
(Işık University Press, 2024-04)In this paper, we introduce the concept of k-regular Picture Fuzzy Matrix (PiFuM) as a generalization of regular matrix and investigate some basic properties of a k-Regular Picture Fuzzy Matrix (k-RPiFuM). Moreover we ... -
On the Cauchy problem for systems of linear equations of elliptic type of the first order in the space R?
(Işık University Press, 2024-04)In the present paper, on the basis of the Carleman matrix, approximate solutions of the Cauchy problem for matrix factorizations of the Helmholtz equation are found in explicit form. -
Secure point set domination in graphs
(Işık University Press, 2024-04)In this paper, we introduce the notion of secure point-set domination in graphs. A point-set dominating D of graph G is called a secure point-set dominating set if for every vertex u ? V ?D, there exists a vertex v ? D?N(u) ... -
New vertex-edge sombor, Nirmala and Misbalance indices
(Işık University Press, 2024-04)The molecular structure of a compound contains all the information which would help to determine its chemical, biological, and physical properties. With the help of a theoretical descriptor tool known as topological indices, ... -
Existence and uniqueness results for fuzzy boundary value problems of nonlinear differential equations involving Atangana-Baleanu fractional derivatives
(Işık University Press, 2024-04)This manuscript is devoted to the investigation of the existence and uniqueness results for fuzzy fractional boundary value problems of some nonlinear differential equations involving fuzzy Atangana-Baleanu fractional ... -
Nullity and energy of the cubic power graph
(Işık University Press, 2024-04)Let G be a finite abelian group with identity 0, G1 = {3t | t ? G} ? G and G2 = G \ G1. The cubic power graph ?cpg of G is an undirected simple graph with vertex set G, such that two distinct vertices x and y are adjacent ... -
Coefficient estimate of the second Hankel determinant of logarithmic coefficients for the subclass of close-to-convex function
(Işık University Press, 2024-04)Let S denote the subclass of the analytic function and univalent functions in D, where D is defined as a unit disk, and having the Taylor representation form of S. In this paper, we will be obtaining the second Hankel ... -
Some new trapezoidal type inequalities for strongly geometric-arithmetically convex functions
(Işık University Press, 2024-04)This paper considers some preliminary conclusions of Fej´er’s integral inequality relevant to strongly geometric arithmetic convex functions that is a type of the class of convex functions and also a mapping to produce a ... -
On quasi statistical convergence of complex uncertain sequences
(Işık University Press, 2024-04)In this paper, we introduce and investigate the concept of quasi statistical convergence of complex uncertain sequences. We also establish the relationship of the notion with statistical convergence of complex uncertain ... -
A comparative and illustrative study for solving singularly perturbed problems with two parameters
(Işık University Press, 2024-04)This computational study concerns approximate solutions of singularly perturbed one-dimensional boundary-value problems having perturbed convection and diffusion terms. Such kinds of problems take different stands depending ... -
Independent domination number of graphs through vertex switching
(Işık University Press, 2024-04)Let G = (V, E) be a graph with vertex set V and edge set E. An independent dominating set S of G is a subset of V with the property that every vertex in V ? S is adjacent to some vertex in S and no two vertices within S ...
