African Journal of
Mathematics and Computer Science Research

  • Abbreviation: Afr. J. Math. Comput. Sci. Res.
  • Language: English
  • ISSN: 2006-9731
  • DOI: 10.5897/AJMCSR
  • Start Year: 2008

AJMCSR Articles in press

Article in Press

An elegant and short proof of Goldbach conjecture

In this paper several methods are examined for proving the Goldbach conjecture. At the preliminary analysis stage a Diophantine equation solution method is proposed for Goldbach partition of a Goldbach number. The proof method proposed however is found to be incomplete since it does not have mechanisms for dealing with the prime gap problem. On the further analysis section some graphical and linear analytical methods are...

Author(s):Samuel Bonaya Buya

Article in Press

The Half way Series Expansion

A new formula for mathematics is derived which gives the upper half of the series expansion of the expression , where is a natural number. A proof of the new formula is given followed by a simple example to test its accuracy. This formula is helpful whenever is large.

Author(s):Alpha Ibrahim Turay

Article in Press

Implementing Chiu’s fixed lifetime inventory model

The fixed lifetime inventory system with zero or positive leadtime has being considered by various authors, with the aim of reducing the quantity outdating in the inventory system. Chiu (1995), considered the positive leadtime case by approximating the expected shortage quantity, the expected outdate quantity and the expected on hand inventory. His result was a ordering policy where are the ordered quantity and the reorder...

Author(s):Izevbizua O. and Omosigho S. E

Article in Press

RESULTS ON GENERALIZED FUZZY SOFT TOPOLOGICAL SPACES

In this paper the concept of a generalized fuzzy soft point is introduced and some of its basic properties are studied. Also, the concepts of a generalized fuzzy soft base (subbase) and a generalized fuzzy soft subspace are introduced and some important theorems are established

Author(s):F. H. KHEDR FATHI HESHAM KHEDR, S.A. ABD EL-BAKI Shaker Ahmad Abd El-Baky

Article in Press

Some combinatorial problems in the symmetric inverse semigroups

The subsemigroup of order-preserving and order-decreasing and order-reversing partial one-one transformation were studied. The element of partial one-one transformation was constructed and the combinatorial results of their cardinality, fix point, height, waist and idempotent were enumerated. Finally, the results were presented and highlighted open problems.

Author(s):CORNELIUS MICHAEL

Article in Press

A COMPARATIVE REVIEW OF DIFFERENT RUNGE KUTTA METHODS FOR SOLVING INITIAL VALUE PROBLEMS OF FIRST ORDER ORDINARY DIFFERENTIAL EQUATIONS

Given a differential equation with the condition ), where is any point in the domain of y, we can define an initial value problem as a problem whose solution is being sought for at a particular point. Therefore an initial value problem is of the form; , ), for where is the domain of .In this work we shall concern ourselves with the analysis of first order ordinary equations of initial value type which are of the form =...

Author(s):Okereke .C. Emmanuel, Nnochiri . U. Ifeoma, Abangwu .E. Chika

Article in Press

Analytical Solution of the Ebola Epidemic model by Homotopy Perturbation method

In this paper, we present a mathematical model of Ebola disease comprising differential equations. We employ the Homotopy perturbation method to the proposed model to determine both the analytic and approximate solutions. Following our results we then observed that Homotopy perturbation method is one the most crucial and effective as just few perturbation terms are enough to obtain a reasonable accurate solution. The...

Author(s):Bonyah Ebenezer, O.T. Kolebaje, Asiedu-Addo Samuel Kwesi

Article in Press

PREDICTING GOVERNMENT REVENUE AND EXPENDITURE USING TWO AND THREE-STAGES LEAST SQUARES (THE CASE OF NIGERIA, 1961-2014)

Government revenue and expenditure relationship had been a source of concern in statistics, given its relevance in National Economic Planning and Policy making in Nigeria especially with respect to growth and stability of the economy. The purpose of this research work is to investigate and compare the estimates of 2SLS and 3SLS in predicting revenue and expenditure of Nigeria using revenue and expenditure data sourced from...

Author(s):JOSEPH MSOUGHGA AGOM, Jonathan Atsua IKUGHUR

Article in Press

Heteroscedasticity in One Way Multivariate Analysis Of Variance

This work aimed at developing an alternative procedure to MANOVA test when there is problem of heteroscedasticity of dispersion matrices and compared the procedure with an existing multivariate test for vector of means (by Johanson). The alternative procedure was developed by adopting Satterthwaite’s approach of univariate test for unequal variances. The approach made use of approximate degree of freedom method in one way...

Author(s):ONI ADEBAYO, Gafar Oyeyemi, Babatunde Adeleke

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