Toplam kayıt 40, listelenen: 18-37

    • Green's function for impulsive periodic solutions in alternately advanced and delayed differential systems and applications 

      CHİU, Kuo-shou (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper we investigate the existence of the periodic solutions of a nonlinear impulsive differential system with piecewise alternately advanced and retarded arguments, in short IDEPCAG, that is, the argument is a ...
    • Hermite-Hadamard-Fejér inequalities for double integrals 

      Budak, Hüseyin; Sarıkaya, Mehmet Zeki (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we first obtain Hermite-Hadamard-Fejer inequalities for co-ordinated convex functions in a rectangle from the plane R2. Moreover, we give the some refinement of these obtained Hermite-Hadamard-Fejer inequalities ...
    • Implementation of computation formulas for certain classes of Apostol-type polynomials and some properties associated with these polynomials 

      Küçükoğlu, İrem (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The main purpose of this paper is to present various identities and computation formulas for certain classes of Apostol-type numbers and polynomials. The results of this paper contain not only the λ -Apostol-Daehee ...
    • Implementation of DRBEM for the determination of the heat flux in an inverse problem 

      Alsoy-Akgün, Negehan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      A numerical investigation of inverse unsteady natural convection flow in a square cavity filled with C u − water nanofluid is performed. In the direct problem, the enclosure is bounded by one isothermally heated ...
    • Intuitionistic fuzzy hypersoft sets 

      Yolcu, Adem; SMARANDACHE, Florentin; Öztürk, Taha Yasin (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, a new environment namely, intuitionistic fuzzy hypersoft set (IFHSS) is defined. We introduce some fundamental operators of intuitionistic fuzzy hypersoft sets such as subset, null set, absolute set, complement, ...
    • Lump-type solutions of a new extended (3+1)-dimensional nonlinear evolution equation 

      Yıldırım, Yakup; Yaşar, Emrullah (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we study lump-type solutions to a new extended (3+1)-dimensional nonlinear evolution equation which appears in the field of wave propagation in the nonlinear systems. We generate these types of solutions by ...
    • Medical model estimation with particle swarm optimization 

      Sarı, Murat; Ahmad, Arshed; Uslu, Hande (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, a nonlinear medical model based on observational variables has been produced and the particle swarm optimization (PSO) technique, which is an effective technique to predict optimum parameters of the biomedical ...
    • Natural and conjugate mates of Frenet curves in three-dimensional Lie group 

      Mak, Mahmut (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this study, we introduce the natural mate and conjugate mate of a Frenet curve in a three dimensional Lie group G with bi-invariant metric. Also, we give some relationships between a Frenet curve and its natural ...
    • New fuzzy differential subordinations 

      Oros, Georgia İ. (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, some new fuzzy differential subordinations obtained by using the integral operator Im γ : An →An introduced in [13] are obtained.
    • Nonparametric modeling via two-way mixed effects design 

      Demircioğlu, Sevgi; Güven, Bilgehan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The classical F-test for testing the hypothesis of no fixed main effects in a mixed effects design is valid under the assumption of normality, symmetry and variance homogeneity of the error terms assumption. We consider ...
    • On almost Hurewicz property in bitopological spaces 

      CHAUHAN, Harsh Vardhan; SİNGH, Beenu (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The purpose of this paper is to investigate properties and results of the almost Hurewicz property in bitopological spaces. We characterize this property using ( i , j ) - regular open sets and almost continuous ...
    • On exponential type P-functions 

      Numan, Selim; İşcan, İmdat (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we introduce and study the concept of exponential type P-function and establish Hermite-Hadamard's inequalities for this type of functions. In addition, we obtain some new Hermite-Hadamard type inequalities ...
    • On the lifts of F_{a}(5,1)-structure on tangent and cotangent bundle 

      JABRAİLZADE, Fidan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      This paper consist of three main sections. In the first part, we obtain the complete lifts of the F_{a}(5,1)-structure on tangent bundle. We have also obtained the integrability conditions by calculating the Nijenhuis ...
    • On the Lipschitz stability of inverse nodal problem for Dirac system 

      Yılmaz, Emrah; Kemaloğlu, Hikmet (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      Inverse nodal problem on Dirac operator is determination problem of the parameters in the boundary conditions, number m and potential function V by using a set of nodal points of a component of two component vector ...
    • Pseudo pure-injective objects 

      Bertaş, Mustafa Kemal (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      We show that if M and N are pure essentially equivalent objects in a finitely accessible additive category A such that M is pseudo pure-N- injective and N is pseudo pure-M-injective, then M≅N.
    • Set operators and associated functions 

      Modak, Shyamapada; Selim, Sk (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The study of two operators local function and the set operator ψ on the ideal topological spaces are likely to be same to the study of closure and interior operator of the topological spaces. However, they are not ...
    • Several integral inequalities for generalized Riemann-Liouville fractional operators 

      GALEANO DELGADO, Juan Gabriel; NAPOLES VALDES, Juan Eduardo; PÉREZ REYES, Edgardo (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, using a generalized integral operator, of the Riemann-Liouville type, defined and studied in a previous work by the authors, we obtain various integral inequalities for positive functions, which contains ...
    • Some notes on lifts of the F((υ+1),λ²(υ-1))-structure on cotangent and tangent bundle 

      Çayır, Haşim (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The F^{v+1}-λ²F^{v-1}=0 structure (v≥3) have been studied by Kim J. B. K75. Later, Srivastava S.K studied on the complete lifts of (1,1) tensor field F satisfying structure F^{v+1}-λ²F^{v-1}=0 and extended in Mⁿ to cotangent ...
    • Some properties of a new class of analytic functions defined via Rodrigues formula 

      Gezer, Halil; Kaanoğlu, Cem (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we introduce and study the new family of analytic functions via Rodrigues formula. Some main properties, the generating function, various recurrence relations and differential properties of these functions ...
    • Spectrum and symmetries of the impulsive difference equations 

      Bayram, Elgiz; Cebesoy, Şerifenur; Solmaz, Şeyda (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      This paper deals with the spectral analysis and symmetries of the second order difference equations with impulse. We determine a transfer matrix and this allows us to investigate the locations of eigenvalues and spectral ...