sherpa/romeo

Now showing items 21-40 of 40

    • 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 ...
    • 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.
    • 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 ...
    • 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.
    • Univalence criteria of the certain integral operators 

      Mustafa, Nizami; Korkmaz, Semra (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we give some sufficient conditions for the univalence of some integral operators. For this, we use the Becker's and generalized version of the well known Ahlfor's and Becker's univalence criteria.
    • The uniform convergence of Fourier series expansions of a Sturm-Liouville problem with boundary condition which contains the eigenparameter 

      Göktaş, Sertaç; Maris, Emir Ali (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      This paper is devoted to investigating the uniform convergence conditions of Fourier series expansions of continuous functions in terms of eigenfunctions of a Sturm-Liouville problem with eigenparameter in one of the ...
    • 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 ...
    • Change-constrained stochastic programming problem with normal, t and skew normal, skew t distributions 

      İnan, Gültaç Eroğlu (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, a change constrained optimization programming problem is studied under the assumption that the model coe¢ cients in the inequalities defned as random variables are independent and assumed to be Normal, t; ...
    • Bootstrap based multi-step ahead joint forecast densities for financial interval-valued time series 

      Beyaztaş, Beste Hamiye (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      This study presents two interval-valued time series approaches to construct multivariate multi-step ahead joint forecast regions based on two bootstrap algorithms. The first approach is based on fitting a dynamic bivariate ...
    • 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 ...
    • Best proximity point theory on vector metric spaces 

      Şahin, Hakan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper, we first give a new definition of Ω-Dedekind complete Riesz space (E,≤) in the frame of vector metric space (Ω,ρ,E) and we investigate the relation between Dedekind complete Riesz space and our new concept. ...
    • Dual-complex generalized k-Horadam numbers 

      Köme, Sure; Köme, Cahit; Yazlık, Yasin (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The purpose of this paper is to provide a broad overview of the generalization of the various dual-complex number sequences, especially in the disciplines of mathematics and physics. By the help of dual numbers and ...
    • 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 ...
    • Statistical extension of bounded sequence space 

      Altınok, Maya; Küçükaslan, Mehmet; Kaya, Umutcan (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this paper by using natural density real valued bounded sequence space l ∞ is extented and statistical bounded sequence space l s t ∞ is obtained. Besides the main properties of the space l s t ∞ , it ...
    • 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 ...
    • Bipolar fuzzy soft D-metric spaces 

      Dalkılıç, Orhan; Demirtaş, Naime (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The first aim to this paper is to introduce the notions of bipolar fuzzy soft metric space and bipolar fuzzy soft (D-)metric space. In order to define these concepts, the concept of bipolar fuzzy soft points has been brought ...
    • A classification of ( k , μ ) ′ -almost Kenmotsu manifolds admitting Cotton tensor 

      DEY, Dibakar; MAJHİ, Pradip (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      The object of the present paper is to classify ( k , μ ) ′ -almost Kenmotsu manifolds admitting Cotton tensors. We characterize ( k , μ ) ′ -almost Kenmotsu manifolds with vanishing and parallel Cotton ...
    • 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 ...
    • 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 ...
    • A new lifetime distribution: transmuted exponential power distribution 

      Saraçoğlu, Buğra; Tanış, Caner (Ankara Üniversitesi Fen Fakültesi, 2021-06-30)
      In this study, a new statistical distribution called as Transmuted Exponential Power distribution using the quadratic rank transmutation map introduced by Shaw and Buckley [23,24] is suggested. The various mathematical and ...