Browsing by Department "BTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Matematik Bölümü"
Now showing items 120 of 54

Almost cosympletic statistical manifolds
(Natl Inquiry Services Centre Pty Ltd, 2020)This paper is a study of almost contact statistical manifolds. Especially this study is focused on almost cosymplectic statistical manifolds. We obtained basic properties of such manifolds. A characterization theorem and ... 
Biharmonic PseudoRiemannian Submersions from 3Manifolds
(Univ Nis, Fac Sci Math, 2018)We classify the pseudoRiemannian biharmonic submersion from a 3dimensional space form onto a surface. 
Bounds for matching number of fundamental realizations according to new graph invariant omega
(Jangjeon Research Institute for Mathematical Sciences and Physics, 2020)Matching number of a graph is one of the intensively studied areas in graph theory due to numerous applications of the matching and related notions. Recently, Delen and Cangul defined a new graph invariant denoted by ? ... 
CLASSIFICATION OF THREEDIMENSIONAL CONFORMALLY FLAT QUASIPARASASAKIAN MANIFOLDS
(Honam Mathematical Soc, 2019)The aim of this paper is to study threedimensional conformally flat quasiparaSasakian manifolds. First, the necessary and sufficient conditions are provided for threedimensional quasiparaSasakian manifolds to be ... 
The complex step approximation to the higher order Frechet derivatives of a matrix function
(Springer, 2020)Thekth Frechet derivative of a matrix functionfis a multilinear operator from a cartesian product ofksubsets of the spaceDOUBLESTRUCK CAPITAL Cnxn into itself. We show that thekth Frechet derivative of a realvalued ... 
Computing the Hosoya and the MerrifieldSimmons Indices of Two Special Benzenoid Systems
(University of Kashan, 2021)Gutman et al. gave some relations for computing the Hosoya indices of two special benzenoid systems Rn and Pn. In this paper, we compute the Hosoya index and MerrifieldSimmons index of Rn and Pn by means of introducing ... 
Computing the MerrifieldSimmons indices of benzenoid chains and double benzenoid chains
(Springer Science and Business Media Deutschland GmbH, 2021)In this paper, we introduce the MerrifieldSimmons vector defined at a path of corresponding double hexagonal (benzenoid) chain. By utilizing this vector, we present reduction formulae to compute the MerrifieldSimmons ... 
Curvature Properties of QuasiParaSasakian Manifolds
(Int Electronic Journal Geometry, 2019)The paper is devoted to study quasiparaSasakian manifolds. Basic properties of such manifolds are obtained and general curvature identities are investigated. Next it is proved that if M is a quasiparaSasakian manifold ... 
Determination of a timedependent coefficient in a nonlinear hyperbolic equation with nonclassical boundary condition
(Institute of Mathematics and Mechanics, National Academy of Sciences of Azerbaijan, 2021)The nonlinear hyperbolic equation is used to model many nonlinear phenomena. In this paper, we consider an initial boundary value problem for nonlinear hyperbolic equation. We determine a timedependent coefficient ... 
Determination of a TimeDependent Coefficient in a Wave Equation with Unusual Boundary Condition
(Univ Nis, Fac Sci Math, 2019)In this paper, an initial boundary value problem for a wave equation with unusual boundary condition is considered. Giving an integral overdetermination condition, a timedependent potential is determined and existence ... 
Determination of the timedependent reaction coefficient and the heat flux in a nonlinear inverse heat conduction problem
(Taylor & Francis Ltd, 2019)Diffusion processes with reaction generated by a nonlinear source are commonly encountered in practical applications related to ignition, pyrolysis and polymerization. In such processes, determining the intensity of reaction ... 
Digital homotopic distance between digital functions
(Universidad Politecnica de Valencia, 2021)In this paper, we define digital homotopic distance and give its relation with LS category of a digital function and of a digital image. Moreover, we introduce some properties of digital homotopic distance such as being ... 
Digital LusternikSchnirelmann category
(Scientific Technical Research Council TurkeyTubitak, 2018)In this paper, we define the digital LusternikSchnirelmann category cat(kappa), introduce some of its properties, and discuss how the adjacency relation affects the digital LusternikSchnirelmann category. 
Digital LusternikSchnirelmann category of digital functions
(2020)Roughly speaking, the digital LusternikSchnirelmann category of digital images studies how far a digital image is away from being digitally contractible. The digital LusternikSchnirelmann category (digital LS category, ... 
Digital Lusternik–Schnirelmann category
(2018)In this paper, we define the digital Lusternik–Schnirelmann category cat? , introduce some of its properties, and discuss how the adjacency relation affects the digital Lusternik–Schnirelmann category 
Directed topological complexity of spheres
(Springer Nature, 2020)We show that the directed topological complexity [as defined by Goubault (On directed homotopy equivalences and a notion of directed topological complexity, 2017. arXiv:1709.05702)] of the directed nsphere is 2, for all ... 
EDGEZAGREB INDICES OF GRAPHS
(Turkic World Mathematical Soc, 2020)The algebraic study of graph matrices is an important area of Graph Theory giving information about the chemical and physical properties of the corresponding molecular structure. In this paper, we deal with the edgeZagreb ... 
EXISTENCE AND UNIQUENESS OF AN INVERSE PROBLEM FOR A WAVE EQUATION WITH DYNAMIC BOUNDARY CONDITION
(Turkic World Mathematical Soc, 2020)In this paper, an initial boundary value problem for a wave equation with dynamic boundary condition is considered. Giving an additional condition, a timedependent coefficient is determined and existence and uniqueness ... 
Existence and uniqueness of an inverse problem for nonlinear KleinGordon equation
(Wiley, 2019)In this paper, an initial boundary value problem for nonlinear KleinGordon equation is considered. Giving an additional condition, a timedependent coefficient multiplying nonlinear term is determined, and existence and ... 
A Generalized Wintgen Inequality for Legendrian Submanifolds in Almost Kenmotsu Statistical Manifolds
(2019)Main interest of the present paper is to obtain the generalized Wintgen inequality for Legendrian submanifolds in almost Kenmotsu statistical manifolds.