Volume 17, Issue 1 (2021) | Journal of Mathematics and Statistics

A New Family: Σh Distributions

Yasser Mohamed Amer — 2021-01-07

Journal of Mathematics and Statistics, Published online: 7 January 2021; doi:10.3844/jmssp.2021.1.12

In this study, a new method is proposed for generating families of the sum of the hazard functions for two distributions named the Σh distributions. This new family will help in the application of a...

Elliptic Weighted Problem with Indefinite Asymptotically Linear Nonlinearity

Hanadi Zahed — 2021-02-08

Journal of Mathematics and Statistics, Published online: 8 February 2021; doi:10.3844/jmssp.2021.13.21

The objective of this paper is the study the following nonlinear elliptic problem involving a weight function:-div(a(x)∇υ) = f(x, u) in Ω and u = 0 on ∂Ω (P)where, Ω is a regular bounded subse...

Application of Bi-Directional Grid Constrained Stochastic Processes to Algorithmic Trading

Aldo Taranto — 2021-03-06

Journal of Mathematics and Statistics, Published online: 6 March 2021; doi:10.3844/jmssp.2021.22.29

Bi-directional Grid Constrained (BGC) Stochastic Processes (BGCSP) become more constrained the further they drift away from the origin or time axis are examined here. As they drift further away from t...

Oscillatory Behavior of Euler Cauchy Equation with Heaviside Step Function of a Bulge Function Over Various Time Domain

Jitendra Kumar Pati — 2021-09-07

Journal of Mathematics and Statistics, Published online: 7 September 2021; doi:10.3844/jmssp.2021.30.43

In this study authors discuss oscillatory property of Euler Cauchy Equation with heaviside step function of a bulge function in respect of homogenous and non homogenous output over different time inte...

A Suggested Nonparametric Bivariate Logistic Density Estimator with Application on the Productivity of Egyptian Wheat during 2019/2020

Samah M. Abo-El-Hadid — 2021-05-27

Journal of Mathematics and Statistics, Published online: 27 May 2021; doi:10.3844/jmssp.2021.44.49

In this study, the nonparametric standard logistic density estimator, introduced by Abo-El-Hadid (2018), is extended to the bivariate case. The multiplicative standard logistic distribution is used as...

Robust Modelling of Coronavirus Cases in Egypt: Poisson INARCH and Negative Binomial INARCH

Hanan Elsaied — 2021-06-23

Journal of Mathematics and Statistics, Published online: 23 June 2021; doi:10.3844/jmssp.2021.50.58

This study compares robust Poisson INARCH(P) models (more briefly: RP-INARCH) and robust negative binomial INARCH(p) models (more briefly: RNB-INARCH) to fit the new daily confirmed cases for the firs...

A Simple and Accurate Relation Between the Logarithm Integral Li(x) and the Primes Counting Function π(x) is Derived Making use of the O.E.I.S. Prime Numbers “Sequences”

Paolo Ascarelli — 2021-09-30

Journal of Mathematics and Statistics, Published online: 30 September 2021; doi:10.3844/jmssp.2021.59.60

Today the prime numbers π(x) contained under the number x appears to be somewhat overestimated by the logarithm integral function Li(x) and underestimated by the function x/ln(x), both originally pro...

Existence Results for a Class of Nonlinear Hadamard Fractional with p-Laplacian Operator Differential Equations

Samah Horrigue — 2021-10-02

Journal of Mathematics and Statistics, Published online: 2 October 2021; doi:10.3844/jmssp.2021.61.72

In this study, we are concerned with the existence and uniqueness of solution for some nonlinear Hadamard fractional differential equations. Our results are based on different classical fixed point th...

Some Kinds of Distributional Chaos for Non-Autonomous Discrete Systems

Yongxi Jiang — 2021-11-04

Journal of Mathematics and Statistics, Published online: 4 November 2021; doi:10.3844/jmssp.2021.73.81

In this study, several kinds of distributional chaos are defined in a non-autonomous discrete system and the chaotic behavior of the mapping sequence fn, ∞ = (fn, fn+1···), ∀n ∈ N (N is a set...

On the Valuation of Currency Options in Stressed Markets

Abdulnasser Hatemi-J — 2021-12-24

Journal of Mathematics and Statistics, Published online: 24 December 2021; doi:10.3844/jmssp.2021.83.87

The current article handles the valuation of currency options in the market that is suffering from a financial crisis. The standard formulas for this purpose do not perform accurately. European foreig...

Comparison of Multiple Linear Regression and Neural Network Models in Bank Performance Prediction in Botswana

Hassan Kablay — 2022-01-10

Journal of Mathematics and Statistics, Published online: 10 January 2022; doi:10.3844/jmssp.2021.88.95

Bank performance is critical to the banking sector and the economy as a whole. In this study, Multiple Linear Regression (MLR) technique and feed forward Neural Network (NN) are used to predict the pe...