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44 research outcomes, page 1 of 5
  • publication . Article . 2017
    Open Access English
    Authors:
    A.A.Azamov;
    Publisher: Refaad

    It is suggested several lower estimations for the determinants of matrices consisting of elements +1 and −1, improving the known Hadamard’s lower estimation

  • publication . Article . 2017
    Open Access English
    Authors:
    O. Bazighifan;
    Publisher: Refaad

    This paper is concerned with asymptotic and oscillatory properties of the nonlinear higher-order differential equation with delay argument. Some examples are given to illustrate our main result

  • publication . Article . 2020
    Open Access English
    Authors:
    Nawel Abdesselam;
    Publisher: Refaad

    In this paper, the boundary stabilization of Schr¨odinger equations with variable coefficients by nonlinear and memory feedback is considered. The approch adopted uses Riemannian geometry methods and multipliers techniques.©2020 All rights reserved.

  • publication . Article . 2017
    Open Access English
    Authors:
    Esra Yolacan;
    Publisher: Refaad

    In this paper, we establish the concept of non-self Hardy-Rogers contractions on Banach spaces involving a graph. We also prove some fixed point theorems for such mappings. The results of this paper extend and generalize various known results in the literature.

  • publication . Article . 2016
    Open Access English
    Authors:
    Husnia Mohamed Eldanfour;
    Publisher: Refaad

    In this paper, we consider a modification of the Newton's method which produce iterative method with fourth-order of convergence have been proposed in [4] and obtain new methods with ( seventh or eighth )-order convergence for solving non-linear equations. A general err...

  • publication . Article . 2016
    Open Access English
    Authors:
    Waseem Asghar Khan; Faryal Aijaz Ansari;
    Publisher: Refaad

    In this work an analytical solution of Fractional Black-Scholes European option pricing equation is solved.The analytical solution is based on Sumudu Transform and its differential and integral properties.The obtained solution is presented in the form of Fractional Tayl...

  • publication . Article . 2017
    Open Access English
    Authors:
    Mohamed Zellal; Kacem Belghaba;
    Publisher: Refaad

    In the present work, we apply an analytical method known as Homotopy Perturbation Transform Method, is used for solving Newell-Whitehead-Segel Equation. Five tests are examined to validate the accuracy of this algorithm. Numerical results show that the proposed method i...

  • publication . Article . 2017
    Open Access English
    Authors:
    A. Kamal; T.I. Yassen;
    Publisher: Refaad

    In this article, we study the existence of solutions of the complex linear differential equation of the form f(n) + An−1(z)f(n−1) + ... + A1(z)f0 + A0(z)f = 0, where the coefficients A0,A1,...,An are analytic functions in the unit disc. To carry out the existence of these ...

  • publication . Article . 2020
    Open Access English
    Authors:
    Hariwan Fadhil M.Salih; Nechirvan Badal Ibrahim;
    Publisher: Refaad

    Let G = (V, E) be a simple connected undirected graph. In this paper, we define generalized the divisor sum Tk-function of a graph which is the summation of the sum of divisor k-function of the degree of the vertices of a graph denoted by Tk(G) = P v2V(G) k(deg(v)) and ...

  • publication . Article . 2020
    Open Access English
    Authors:
    Carlos Granados;
    Publisher: Refaad

    The main idea of this article is to introduce and characterize the notions of (i, j)-!-N--open sets in bitopological spaces. It also introduces and studies the concept of (i, j)-!-N--continuous functions. Moreover, (i, j)-!-N--connected and (i, j)-!- N--set-connected fu...

44 research outcomes, page 1 of 5
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