International Journal of Applied Mathematics and Theoretical Physics

Volume 7, Issue 3, September 2021

  • Comparing Two Classical Methods of Detecting Multicollinearity in Financial and Economic Time Series Data

    Mutairu Oyewale Akintunde, Abolade Oludayo Olawale, Ajitoni Simeon Amusan, Adeyinka Ismail Abdul Azeez

    Issue: Volume 7, Issue 3, September 2021
    Pages: 62-67
    Received: 12 May 2021
    Accepted: 7 June 2021
    Published: 18 August 2021
    Abstract: Multicollinearity is an unavoidable problem being faced by researchers in financial and Economic data. It refers to a situation where the degrees of correlations between two or more independent variables are high. This is to say, one explanatory variable can be used in forecasting the other variable. This creates redundant information in a series u... Show More
  • Comparison Between Adomain Decomposition Method and Numerical Solutions of Linear Volterra Integral Equations of the Second Kind by Using the Fifth Order of Non-Polynomial Spline Functions

    Elgaili Abdalla Elhassan Ibrahim, Abdel Radi Abdel Rahman Abdel Gadir Abdel Rahman, Neama Yahia Mohammed, Nageeb Abdallah Hamed Haroun

    Issue: Volume 7, Issue 3, September 2021
    Pages: 68-79
    Received: 11 August 2021
    Accepted: 23 August 2021
    Published: 31 August 2021
    Abstract: Volterra integral equations are a special type of integrative equations; they are divided into two categories referred to as the first and second type. This paper will deal with the second type which has wide range of the applications in physics and engineering problems. Spline functions are piece-wise polynomials of degree n joined together at the... Show More
  • Some Properties of Multivalent Analytic Starlike Function Subordinated with Cosine Hyperbolic Function

    Muhammad Azam, Naseer Ullah

    Issue: Volume 7, Issue 3, September 2021
    Pages: 80-87
    Received: 2 June 2021
    Accepted: 19 July 2021
    Published: 11 September 2021
    Abstract: Abdullah Alotaibi defined a starlike function connected with a cosine hyperbolic function in the year 2020. We establish some appropriate conditions for several features of multivalent analytic starlike function subordinated with cosine hyperbolic function in this article. We determine conditions on α are subordinated by Janowski function. We acqui... Show More