The African Journal of Mathematics and Computer Science Research (AJMCSR) is a peer reviewed open access journal.
The journal commenced publication in August 2008. The African Journal of Mathematics and Computer Science Research covers all areas of mathematics and computer science. The journal welcomes submission of full-length research articles, short communications and review articles. In addition, the journal also welcomes letters and commentaries to the editor.
Triple Shehu transform and its properties with applications
In the current paper, the concept of one-dimensional Shehu Transform have been generalized into three-dimensional Shehu Transform namely, Triple Shehu Transform (TRHT). Further, some main properties, several theorems and properties related to the TRHT have been established.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/7CEE10567028
A focus on the Riemann's hypothesis
In this paper, we initially show that Riemann's ζ (Zêta) function and the analytical extension of this function called ℵ (Aleph)) are distinct. After extending this function in the complex plane except the point s=1, we will show the existence and then the uniqueness of real part zeros equal to 1/2.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/8D9763C65256
Integral Tau method for fourth-order ordinary differential equations with third degree over determination
This paper is concerned with the solution of a class of fourth order initial value problems in ordinary differential equation by the integrated formulation of the Tau method.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/859618D64611
The weighted Monsef distribution
A two-parameter weighted Monsef distribution (WM) is proposed in this paper.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/F5E879764673
Continuous frame in Hilbert space and its applications
In this paper, we study continuous frames in Hilbert spaces using a family of linearly independent vectors called coherent state (CS) and applying it in any physical space.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/091B14F58372
Multi parameter fuzzy soft set approach to decision making problem
In this paper, a new approach for decision making problem is introduced by extending the definition of fuzzy soft set for multiple parameter sets and is called extended fuzzy soft set.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/15971DC58179
One kind of construction on sunflower with two petals*.
In this paper, the authors give a sufficient condition for the existence of a sunflower with 2 petals.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/F9422B265883
Maximizing profit in the poultry farming sector: An application of the robust linear programming technique.
In an attempt to address the problem of unavailable probability distribution functions, this research is aimed at proposing a robust linear programming model which can handle problems and others in similar circumstances with the need of probability distributions.
Full article: https://academicjournals.org/journal/AJMCSR/article-abstract/336955358489
A study on exact solution of the telegraph equation by (G'/G)-expansion method.
In this article, an exact solution of the Telegraph equation is solved by -Expansion method and this is one of the most popular example both linear and non-linear partial differential equations.
See article: https://academicjournals.org/journal/AJMCSR/article-abstract/CF3D70D58985
Derivation of a new block fifth order method for numerical solution of first order initial value problems.
In this study, a new block method of order five for the numerical solution of initial value problems is derived.
See results: https://academicjournals.org/journal/AJMCSR/article-abstract/76FBE6A58983
Comparison of open source data mining softwares on a data set.
In this study, classification algorithms provided by open source tools WEKA, Tanagra, and Scikit-learn were compared.
See study: https://academicjournals.org/journal/AJMCSR/article-abstract/9EF53DD59307
Proof of Beal’s conjecture.
In this research, a proof of Beal’s conjecture is presented.
See more at: https://academicjournals.org/journal/AJMCSR/article-abstract/F5F6E2B59269
Comparative study of the direct and inverse finite element methods for pricing American options.
This paper investigates the computational performance of direct and inverse finite element methods for pricing American options.
More at: https://academicjournals.org/journal/AJMCSR/article-abstract/704794060293
An air quality composite index based on pollutant concentration factor analysis.
This paper analyzes the correlation characteristics of six air pollutants items using the air pollutant monitoring data from 2015 to 2018 which studies the limitations of AQI and proposes a composite index to describe the air quality conditions.
Full study: https://academicjournals.org/journal/AJMCSR/article-abstract/85E774562138
A focus on the Riemann's hypothesis.
In this paper, the author showed that Riemann's (Zêta) function and the analytical extension of this function called (Aleph)) are distinct and then extended this function in the complex plane.
See study: https://academicjournals.org/journal/AJMCSR/article-abstract/8D9763C65256
Total revenue function for non-regular fixed lifetime inventory system.
The features of both the regular and non-regular inventory systems are compared in this work and the total revenue function for the non-regular fixed lifetime inventory system is derived.
Full article: https://academicjournals.org/journal/AJMCSR/article-abstract/2AB7A7662382
Integral Tau method for fourth-order ordinary differential equations with third degree over determination.
This paper is concerned with the solution of a class of fourth order initial value problems in ordinary differential equation by the integrated formulation of the Tau method.
See study: https://academicjournals.org/journal/AJMCSR/article-abstract/859618D64611
A short note on inequalities of interval-valued intuitionistic fuzzy matrices.
In this paper, some results related to inequalities of interval-valued intuitionistic fuzzy matrices with respect to algebraic sum and algebraic product were studied and proven.
See article: https://academicjournals.org/journal/AJMCSR/article-abstract/376254962380
Fixed lifetime inventory system with double order under useful lifetime based model.
To eliminate or reduce shortages in the fixed lifetime inventory system, a model is proposed where there are two orders, one period apart in arriving into the inventory system. The second order is designed to satisfy any demand that cannot be satisfied by the first order.
Full study: https://academicjournals.org/journal/AJMCSR/article-abstract/007D18E62718
Volatility measure of Nigeria crude oil production as a tool to investigate production variability.
This paper aims at using volatility measures to investigate variability of crude oil production as an assumed contributor to the economic downturn observed in the recent past in Nigeria.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/493EA4662638
A mathematical model for solving integer linear programming problems.
A suggested algorithm to solve fully rough integer linear programming (FRILP) problems is introduced in this paper in order to find rough value optimal solutions and decision rough integer variables, where all parameters and decision variables in the constraints and the objective function are rough intervals (RIs).
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/8AB802563098
An internal heat source in temperature rate dependent thermoelastic medium subjected to the effect of rotation and gravity field.
The present work is devoted to study the effect of rotation and gravity field in a homogeneous, isotropic elastic semi- infinite, which is at initial temperature, and subjected to heat source and load moving with finite velocity.
Full study: https://academicjournals.org/journal/AJMCSR/article-abstract/6AF95AE62948
Three-step optimized block backward differentiation formulae (TOBBDF) for solving stiff ordinary differential equations.
In this study, the method presented here adopts polynomial of order 6 and three hybrid points chosen appropriately to optimize the local truncation errors of the main formulas for the block.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/ADC850063396
Funmatics: The future generation of African mathematical scientists - How their minds works.
In this letter to the editor, the authors suggested that future generation of mathematicians, particularly from the African continent will need to be bred and homegrown to contribute to science globally through the utilization of indigenous gaming technique.
See letter: https://academicjournals.org/journal/AJMCSR/article-abstract/15853D263767
An automorphism in the LK_ITB5a H110F gene mutation.
This study investigates a type of transformation in the LK_ITB5a lipase gene mutation.
See article: https://academicjournals.org/journal/AJMCSR/article-abstract/D5CF6F164184
The weighted Monsef distribution.
A two-parameter weighted Monsef distribution (WM) is proposed in this paper. WM is flexible and has the property that the hazard rate function can accommodate both increasing and bathtub shapes.
See more: https://academicjournals.org/journal/AJMCSR/article-abstract/F5E879764673
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