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Güncel Gönderiler

  • ERRATUM TO: "NEIGHBORHOOD FOR ANALYTIC FUNCTIONS INVOLVING MODIFIED SIGMOID FUNCTION" [COMMUN. FAC. SCI. UNIV. ANK. SER. A1 MATH. STAT., 68(2) (2019), 2161-2169 

    Orhan, Halit; Çağlar, Murat (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    We draw attention to some corrections in the section of "Applications of Jack's Lemma" which appear in the above-mentioned paper (see 3). Our results have changed due to the lack of the (1/(τ(s))) factor on the left side ...
  • On the stability analysis of the time-fractional variable order Klein-Gordon equation and a numerical simulation 

    Deniz, Sinan (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, the Klein - Gordon equation is generalized using the concept of the variational order derivative. We try to construct the Crank-Nicholson scheme for numerical solutions of the modified Klein- Gordon equation. ...
  • Approximation by sampling type discrete operators 

    Aslan, İsmail (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we deal with discrete operators of sampling type. It is known that this type of operators are related to generalized sampling series and they have important applications. In this work, using bounded and ...
  • Some general integral inequalities for Lipschitzian functions via conformable fractional integral 

    Turhan, Sercan; İşcan, İmdat; Numan, Selim (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, the author establishes some Hadamard-type and Bullen-type inequalities for Lipschitzian functions via Riemann Liouville fractional integral.
  • Generalized difference sequence spaces of fractional order defined by Orlicz functions 

    Aral, Nazlım Deniz; Et, Mikail (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    The main purpose of this paper is to introduce the concepts of Δ^{α}-lacunary statistical convergence of order β (0<β≤1) with the fractional order of α and Δ^{α}-lacunary strongly convergence of order β (0<β≤1) with the ...
  • First order maximally dissipative singular differential operators 

    Ismailov, Zameddin; Al, Pembe İpek (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, using the Calkin-Gorbachuk method, the general form of all maximal dissipative extensions of the minimal operator generated by first order linear multipoint symmetric singular differential-operator expression ...
  • Forecasting mortality rates with a general stochastic mortality trend model 

    Etkin, Hasgül; Selçuk-Kestel, A. Sevtap; Okur, Yeliz Yolcu (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    This paper presents a model, which can closely estimate the future mortality rates whose efficiency is performed through the comparisons with respect to Lee-Carter and mortality trend models. This general model estimates ...
  • Alternative partner curves in the Euclidean 3-space 

    Yılmaz, Beyhan; Has, Aykut (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In the present paper, a new type of special curve couple which are called WC^{∗}-partner curves are introduced according to alternative moving frame {N,C,W}. The distance function between the corresponding points of reference ...
  • On the intuitionistic fuzzy projective Menelaus and Ceva's conditions 

    Akça, Ziya; Bayar, Ayşe; Ekmekçi, Süheyla (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this work, the intuitionistic fuzzy versions of Menelaus and Ceva's theorems in intuitionistic fuzzy projective plane are defined and the conditions to the intuitionistic fuzzy versions of Menelaus and Ceva 6-figures ...
  • A note on hyperbolic (p,q)-Fibonacci quaternions 

    Yağmur, Tülay (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we introduce a new quaternion sequence called hyperbolic (p,q)-Fibonacci quaternions. This new quaternion sequence includes hyperbolic Fibonacci, hyperbolic k-Fibonacci, hyperbolic Pell, hyperbolic k-Pell, ...
  • Generalized Hermite-Hadamard type inequalities for products of co-ordinated convex functions 

    Budak, Hüseyin; Tunç, Tuba (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we think products of two co-ordinated convex functions for the Hermite-Hadamard type inequalities. Using these functions we obtained Hermite-Hadamard type inequalities which are generalizations of some results ...
  • Wijsman asymptotical I_2-statistically equivalent double set sequences of order η 

    Ulusu, Uğur; Gülle, Esra (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this study, we present notions of Wijsman asymptotical I₂-statistically equivalence of order η, Wijsman asymptotical I₂-Cesàro equivalence of order η and Wijsman asymptotical strongly p-I₂-Cesàro equivalence of order η ...
  • Fourier-Bessel transforms of Dini-Lipschitz functions on Lebesgue spaces L p , γ ( R n + ) 

    Ekincioğlu, İsmail; Kaya, Esra; Ekincioğlu, Şeyma (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we prove a generalization of Titchmarsh's theorem for the Laplace-Bessel differential operator in the space L p , γ ( R n + ) for functions satisfying the ( ψ , p ) -Laplace-Bessel Lipschitz ...
  • Relative subcopure-injective modules 

    Alagöz, Yusuf (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, copure-injective modules is examined from an alternative perspective. For two modules A and B, A is called B-subcopure-injective if for every copure monomorphism f : B → C and homomorphism g : B → A, there ...
  • Interval oscillation criteria for impulsive conformable fractional differential equations 

    Raja, Thangaraj; Bolat, Yaşar; Logaraasi, Kandhasamy; Sadhasivam, Vadivel (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we derive new interval oscillation criteria for impulsive conformable fractional differential equations having fixed moments of impulse actions. The results are extended to a more general class of nonlinear ...
  • A comparison of different methods of estimation for the flexible Weibull distribution 

    Ali, Sajid; Dey, Sanku; Tahir, M. H.; Mansoor, Muhammad (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    This article presents different parameter estimation methods for flexible Weibull distribution introduced by Bebbington et al. (Reliability Engineering and System Safety 92:719-726, 2007), which is a modified version of ...
  • Generalized fuzzy subhyperspaces based on fuzzy points 

    Dehghan, Omid Reza; Norouzi, M. (Ankara Üniversitesi Fen Fakültesi, 2019-06-30)
    We define (∈,∈∨q^{δ})-fuzzy subhyperspaces and (∈,∈∨q_{k}^{δ})-fuzzy subhyperspaces, as a generalization of fuzzy subhyperspaces, (∈,∈∨q)-fuzzy subhyperspaces and (∈,∈∨q_{k})-fuzzy subhyperspaces. In this way, we show that ...
  • Grand Lorentz sequence space and its multiplication operator 

    Oğur, Oğuz (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this paper, we introduce the grand Lorentz sequence spaces ℓ_{p,q)}^{θ} and study on some topological properties. Also, we characterize some properties of the multiplication operator, such as compactness, Fredholmness ...
  • A comparative study of classifiers for early diagnosis of gestational Diabetes Mellitus 

    Muller, Priya Shirley; Nirmala, M. (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    Gestational Diabetes Mellitus (GDM), usually found deploying a medical test called the Oral Glucose Tolerance Test (OGTT), is a prevalent complication during pregnancy. Early detection of GDM and identifying the most ...
  • The Gompertz extended generalized exponential distribution: properties and applications 

    Eghwerido, J.T.; Adubısı, Obinna Damian; Nzeı, Lawrence; Davıd, Ikwuoche John (Ankara Üniversitesi Fen Fakültesi, 2020-06-30)
    In this article, a new class of distribution in the exponential family of distributions called the Gompertz extended generalized exponential distribution (G-EGE) for life time processes is proposed. The mathematical ...

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