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All published articles 1763

Generalized Fibonacci Numbers with Indices in Arithmetic Progression and Sum of Their Squares: The Sum Formula ∑nk=0 xkW2mk+j

Y¨üksel Soykan · Journal of Advances in Mathematics and Computer Science · 2021

In this paper, closed forms of the sum formulas ∑n k=0 xkWmk 2 +j for generalized Fibonacci numbers are presented. As special cases, we give sum formulas of Fibonacci, Lucas, Pell, Pell-Lucas, Jacobsthal, Jacobsthal-Lucas numbers. We present the proofs to indicate how these formu...

Open access Research Article 10.9734/jamcs/2021/v36i630371

Numerical Approximations of ODEs Initial Value Problem; A Case Study of Gluconic Acid Fermentation by Pseudomonas ovalis

N. A. Ihoeghian & B. O. John · Journal of Advances in Mathematics and Computer Science · 2021

Across different sections of life, physical and chemical sciences, differential equations which could be ordinary differential equations (ODEs) or partial differential equations (PDEs) are used to model the various systems as observed. Some types of ODEs, and a few PDEs are solva...

Open access Research Article 10.9734/jamcs/2021/v36i630369

Construction of Functions for Fractional Derivatives using Matlab

Olagunju Adeyemi Sunday & Joseph Folake Lois · Journal of Advances in Mathematics and Computer Science · 2021

MATLAB is a high level programming tool for technical computing, its application cuts across different sphere of science, engineering, finance, communication, music etc. With the current increase in the use of non-integer order derivatives, there is a need to have tools that hand...

Open access Research Article 10.9734/jamcs/2021/v36i630368

Some Geometric Properties of a Non-Strict Eight Dimensional Walker Manifold

Silas Longwap, Gukat G. Bitrus & Chibuisi Chigozie · Journal of Advances in Mathematics and Computer Science · 2021

An 8 dimensional Walker manifold (M; g) is a strict walker manifold if we can choose a coordinate system fx1; x2; x3; x4; x5; x6; x7; x8g on (M,g) such that any function f on the manfold (M,g), f(x1; x2; x3; x4; x5; x6; x7; x8) = f(x5; x6; x7; x8): In this work, we dene a Non-str...

Open access Research Article 10.9734/jamcs/2021/v36i530367

A Meta-Heuristic Search Algorithm based on Infrasonic Mating Displays in Peafowls

Kenekayoro Patrick · Journal of Advances in Mathematics and Computer Science · 2021

Meta-heuristic techniques are important as they are used to find solutions to computationally intractable problems. Simplistic methods such as exhaustive search become computationally expensive and unreliable as the solution space for search algorithms increase. As no method is g...

Open access Research Article 10.9734/jamcs/2021/v36i530366

Extended Ensemble Filter for High-dimensional Nonlinear State Space Models

Oryiema Robert, David Angwenyi & Kevin Midenyo · Journal of Advances in Mathematics and Computer Science · 2021

There are several functional forms for non-linear dynamical filters. Extended Kalman filters are algorithms that are used to estimate more accurate values of unknown quantities of internal dynamical systems from a sequence of noisy observation measured over a period of time. This...

Open access Research Article 10.9734/jamcs/2021/v36i530365

Spatial Mesh Refinement using Cubic Smoothing Spline Interpolation in Simulation of 2-D Elastic Wave Equation: Forward Modeling of Full-waveform Inversion

Amila Sudu Ambegedara, U. G. I. G. K. Udagedara & Erik M. Bollt · Journal of Advances in Mathematics and Computer Science · 2021

Full-waveform inversion (FWI) is a non-destructive health monitoring technique that can be used to identify and quantify the embedded anomalies. The forward modeling of the FWI consists of a simulation of elastic wave equation to generate synthetic data. Thus the accuracy of the...

Open access Research Article 10.9734/jamcs/2021/v36i530364

A Mathematical Model for the Transmission of HIV/AIDS with Early Treatment

T. O. Akinwumi, I. A. Olopade, A. O. Adesanya & M. O. Alabi · Journal of Advances in Mathematics and Computer Science · 2021

In this paper, a mathematical model for the transmission of HIV/AIDS with early treatment is developed and analyzed to gain insight into early treatment of HIV/AIDS and other epidemiological features that cause the progression from HIV to full blown AIDS. We established the basic...

Open access Research Article 10.9734/jamcs/2021/v36i530362

The Analysis for the Recovery Cases of COVID-19 in Egypt using Odd Generalized Exponential Lomax Distribution

Hanem Mohamed, Amina E. Abo-Hussien, Salwa A. Mousa & Magda M. Ismail · Journal of Advances in Mathematics and Computer Science · 2021

In this paper, an odd generalized exponential Lomax (OGEL, in short) distribution has been considered. Some mathematical properties of the distribution are studied. The methods of maximum likelihood and maximum product of spacing are used for estimating the model parameters.  Mor...

Open access Research Article 10.9734/jamcs/2021/v36i530363

On the Ideal Based Zero Divisor Graphs of Unital Commutative Rings and Galois Ring Module Idealizations

Owino Maurice Oduor · Journal of Advances in Mathematics and Computer Science · 2021

Let R be a commutative ring with identity 1 and I is an ideal of R. The zero divisor graph of the ring with respect to ideal has vertices defined as follows: {u ∈ Ic | uv ∈ I for some v ∈ Ic}, where Ic is the complement of I and two distinct vertices are adjacent if and only if t...

Open access Research Article 10.9734/jamcs/2021/v36i530360

Fermat’s Last Theorem and Related Problems

Darell Cox, Sourangshu Ghosh & Eldar Sultanow · Journal of Advances in Mathematics and Computer Science · 2021

Empirical evidence in support of generalizations of Fermat's equation is presented. The empirical evidence consists mainly of results for the p = 3 case where Fermat's Last Theorem is almost false. The empirical evidence also consists of results for general p values. The \pth pow...

Open access Research Article 10.9734/jamcs/2021/v36i530361

Set Theory INC# ∞# Based on Infinitary Intuitionistic Logic with Restricted Modus Ponens Rule (Part.II) Hyper Inductive Definitions

Jaykov Foukzon · Journal of Advances in Mathematics and Computer Science · 2021

In this paper intuitionistic set theory INC# ∞# in infinitary set theoretical language is considered. External induction principle in nonstandard intuitionistic arithmetic were derived. Non trivial application in number theory is considered.The Goldbach-Euler theorem is obtained...

Open access Research Article 10.9734/jamcs/2021/v36i430359

Approximation of Subsurface Seepage using 2- Dimensional Boussineq Equation

Chhaya K. Lande · Journal of Advances in Mathematics and Computer Science · 2021

Groundwater is the main source of fresh water available for human beings. The surface water groundwater interaction affects the quantity and quality of groundwater. Hence the study of surfacewater-groundwater interaction is the emerging topic in this new era. In this paper, the a...

Open access Research Article 10.9734/jamcs/2021/v36i430358

A Fractional Discrete Grey Model with Particle Swarm Optimizer and Its Applications in Forecasting the Gasoline Consumption in Chongqing China

Lanxi Zhang & Yubin Cai · Journal of Advances in Mathematics and Computer Science · 2021

Forecasting gasoline consumption is of great significance for formulating oil production, foreign trade policies, and ensuring the balance of domestic refined oil supply. Based on grey system theory, a fractional accumulation operator is constructed to optimize the accumulation m...

Open access Research Article 10.9734/jamcs/2021/v36i430356