• Y -cone metric spaces and coupled common fixed point results with application to integral equation 

  Sharma, Richa; Chouhan, Virendra Singh; Mishra, Sanjay (Işık University Press, 2022)

  This paper acquaints with a concept of Y -cone metric space and to study some topological properties of Y -cone metric space. We prove the coupled common fixed point results for mixed weakly monotone map in ordered Y -cone ...

• Some inequalities for the graph energy of distance Laplacian matrix 

  Kaya Gök, Gülistan (Işık University Press, 2022)

  In this paper, the distance laplacian energy for distance matrix is examined. Some bounds for the laplacian eigenvalues of distance matrix are expanded including the distances, the vertices and the edges. Indeed, different ...

• Central derivation of some classes of Leibniz algebras 

  Almutari, Hassan; Ahmad, Abd Ghafur (Işık University Press, 2022)

  In this study, we deal with central derivation of finite low dimensional Leibniz algebras. We provide some properties of the central derivation algebras. Description of the central derivation algebras, with their dimensions, ...

• The bounds for the largest eigenvalues of Fibonacci-sum and Lucas-sum graphs 

  Taşcı, Dursun; Özkan Kızılırmak, Gül; Büyükköse, Şerife; Sevgi, Emre (Işık University Press, 2022)

  In this paper, we first get the degree of each point in Lucas-sum graph based on Lucas numbers. After that, we obtain lower and upper bounds for the largest eigenvalues ? and µ of the adjacency matrices of Fibonacci-sum ...

• Signed total double Roman dominatıon numbers in digraphs 

  Amjadi, Jafar; Pour Hosseini, Fatemeh (Işık University Press, 2022)

  Let D = (V, A) be a finite simple digraph. A signed total double Roman dominating function (STDRD-function) on the digraph D is a function f : V (D) ? {?1, 1, 2, 3} satisfying the following conditions: (i) P x?N?(v) f(x) ...

• Nonstandard finite difference schemes with application to biological models 

  Khalsaraei, Mohammad Mehdizadeh; Shahriari, Mohammad (Işık University Press, 2022)

  This paper deals with the construction of nonstandard finite difference methods for solving a specific Rosenzweig-MacArthur predator-prey model. The reorganization of the denominator of the discrete derivatives and nonlocal ...

• Approximate fixed point property in IFNS 

  Ertürk, Müzeyyen; Karakaya, Vatan; Mursaleen, Mohammad (Işık University Press, 2022)

  In this paper, we define concept of approximate fixed point property of a function and a set in intuitionistic fuzzy normed space. Furthermore, we give intuitionistic fuzzy version of some class of maps used in fixed point ...

• Extending the applicability of a fourth-order method under Lipschitz continuous derivative in Banach spaces 

  Sharma, Debasis; Kumar Parhi, Sanjaya (Işık University Press, 2022)

  We extend the applicability of a fourth-order convergent nonlinear system solver by providing its local convergence analysis under Lipschitz continuous Fréchet derivative in Banach spaces. Our analysis only uses the ...

• Denumerably many positive solutions for rl-fractional order bvp having denumerably many singularities 

  Prasad, Kapula Rajendra; Khuddush, Mahammad; Rashmita, Mahanty (Işık University Press, 2022)

  In this paper, we consider Riemann-Liouville two-point fractional order boundary value problem having denumerably many singularities and determined sufficient conditions for the existence of denumerably many positive ...

• L(t, 1)-colouring of graphs 

  Pandey, Priyanka; Kureethara, Joseph Varghese (Işık University Press, 2022)

  One of the most famous applications of Graph Theory is in the field of Channel Assignment Problems. There are varieties of graph colouring concepts that are used for different requirements of frequency assignments in ...

• Hub number of generalized middle graphs 

  Basavanagoud, Bommanahal; Sayyed, Mahammadsadiq; Barangi, Anand P. (Işık University Press, 2022)

  A hub set in a graph G is a set S ? V (G) such that any two vertices outside S are connected by a path whose all internal vertices are members of S. The minimum cardinality of hub set is called hub number. In this paper, ...

• Mathematical model for the dispersion of toxicity through commuters 

  Shah, Nita H.; Satia, Moksha H. (Işık University Press, 2022)

  In the proposed paper, we consider three types of vehicle. One is those vehicles which are used for personal purposes called private vehicles. Second is for public transportation named as public vehicles. Third one is used ...

• Coefficient estimates for new subclasses of meromorphic bi-univalent functions associated with linear operatör 

  Alamoush, Adnan Ghazy (Işık University Press, 2022)

  In this paper, we define a new differential linear operator of meromorphic bi-univalent functions class ??, and obtain the estimates for the coefficients |b?| and |b?|. Further we pointed out several new or known consequences ...

• Color Laplacian energy of some cluster graphs 

  D’Soza, Sabitha; Gowtham, Halgar Jagadeesh; Bhat, Pradeep Ganapati; Girija, Kulambi Parameshwarappa (Işık University Press, 2022)

  The color energy of a graph G is defined as the sum of the absolute values of the color eigenvalues of G. The graphs with large number of edges are referred as cluster graphs. Cluster graphs are obtained from complete ...

• Almost unbiased ridge estimator in the zero-inated Poisson regression model 

  Al-Taweel, Younus; Algamal, Zakariya (Işık University Press, 2022)

  The zero-inflated Poisson regression (ZIP) model is a very popular model for count data that have extra zeros. In some situations, the count data are correlated and so multicollinearity exists among the explanatory variables. ...

• Cyclical nonlinear contractive mappings fixed point theorems with application to integral equations 

  Al-Khaleel, Mohammad; Al-Sharif, Sharifa (Işık University Press, 2022)

  In this paper, we present new nonlinear contractions based on altering distances and prove the existence and uniqueness of fixed points for cyclic operators. We prove here very interesting fixed point theorems in which we ...

• Some incomplete Riemann-Liouville fractional derivative operators 

  Menon, Mudita; Mittal, Ekta; Gupta, Rajni (Işık University Press, 2022)

  Several investigations were done by many researchers on extended fractional derivatives operators using different kinds of extended Beta functions (see, e.g.,([4],[7],[8],[18],[20]), and references therein). In this sequel, ...

• Minimal restrained monophonic sets in graphs 

  Santhakumaran, A. P.; Raghu T. Venkata; Ganesamoorthy, K. (Işık University Press, 2022)

  For a connected graph G = (V, E) of order at least two, a restrained monophonic set S of a graph G is a monophonic set such that either S = V or the subgraph induced by V ?S has no isolated vertices. The minimum cardinality ...

• Edge product cordial labeling of switching operation on some graphs 

  Prajapati, Udayan M.; Patel, Nittal B. (Işık University Press, 2022)

  Here we discuss and prove that the graphs attained by switching of any vertex with degree two which is adjacent to a vertex with degree two in triangular snake Tm, switching of any vertex with degree one in path Pm for m ...

• DNA Intuitionistic fuzzy turing machine 

  Rajasekar, M.; Sumathi, V. (Işık University Press, 2022)

  The restriction enzymes of bacteria are used to cut and insert the two strands of double-stranded DNA at different positions that cause overhangs of single stranded DNA. We developed an encoding transition table of an ...

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