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  1. In this paper, a model problem of viscous flow and heat transfer in a rectangular converging (diverging) channel has been investigated. The governing equations are presented in Cartesian Coordinates and conse...

    Authors: Roohi Laila, Dil Nawaz Khan Marwat and Azhar Ali

    Citation: Journal of the Egyptian Mathematical Society 2021 29:18

    Content type: Original research

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  2. Lassa fever is a zoonotic disease spread by infected rodents known as multimammate rats. The disease has posed a significant and major health challenge in West African countries, including Nigeria. To have a d...

    Authors: Mayowa M. Ojo, B. Gbadamosi, Temitope O. Benson, O. Adebimpe and A. L. Georgina

    Citation: Journal of the Egyptian Mathematical Society 2021 29:16

    Content type: Original research

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  3. A steady MHD boundary layer flow of Powell–Eyring dusty nanofluid over a stretching surface with heat flux condition is studied numerically. It is assumed that the fluid is incompressible and the impacts of th...

    Authors: Omima A. Abo-zaid, R. A. Mohamed, F. M. Hady and A. Mahdy

    Citation: Journal of the Egyptian Mathematical Society 2021 29:14

    Content type: Original research

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  4. In this article, the authors applied a logistic growth model explaining the dynamics of the spread of COVID-19 in Egypt. The model which is simple follows well-known premises in population dynamics. Our aim is...

    Authors: Assem S. Deif and Sahar A. El-Naggar

    Citation: Journal of the Egyptian Mathematical Society 2021 29:13

    Content type: Original research

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  5. Hydrodynamic behaviour of slip flow and radially applied exponential time-dependent pressure gradient in a curvilinear concentric cylinder is examined. A two-step method of solution has been utilized in resolv...

    Authors: Basant K. Jha and Dauda Gambo

    Citation: Journal of the Egyptian Mathematical Society 2021 29:11

    Content type: Original research

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  6. The aim of this paper is to investigate the relations among the L-fuzzy pre-proximities, L-fuzzy closure operators and L-fuzzy co-topologies in complete residuated lattices. We show that there is a Galois corresp...

    Authors: A. A. Ramadan, E. H. Elkordy and M. A. Usama

    Citation: Journal of the Egyptian Mathematical Society 2021 29:9

    Content type: Original research

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  7. In this paper, a latent infection susceptible–exposed–infectious–recovered model with demographic effects is used to understand the dynamics of the COVID-19 pandemics. We calculate the basic reproduction number (

    Authors: Abdul A. Kamara, Lagès N. Mouanguissa and Godfrey Okumu Barasa

    Citation: Journal of the Egyptian Mathematical Society 2021 29:8

    Content type: Original research

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  8. In this paper, we apply an accelerated version of the Adomian decomposition method for solving a class of nonlinear partial differential equations. This version is a smart recursive technique in which no diffe...

    Authors: I. L. El-Kalla, E. M. Mohamed and H. A. A. El-Saka

    Citation: Journal of the Egyptian Mathematical Society 2021 29:7

    Content type: Original research

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  9. An asymptotic perturbation solution for a linear oscillator of free damped vibrations in fractal medium described by local fractional derivatives was obtained in Yang and Srivastava (Commun Nonlinear Sci Numer...

    Authors: Mithilesh Singh, Seema Sharma and Sunil Rawan

    Citation: Journal of the Egyptian Mathematical Society 2021 29:6

    Content type: Original research

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  10. In this paper, we consider a reaction–diffusion model in population dynamics and study the impact of different types of Allee effects with logistic growth in the heterogeneous closed region. For strong Allee e...

    Authors: Kamrun Nahar Keya, Md. Kamrujjaman and Md. Shafiqul Islam

    Citation: Journal of the Egyptian Mathematical Society 2021 29:4

    Content type: Original research

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  11. The assessment of melting heat transfer and non-uniform heat source on magnetic Cu–H2O nanofluid flow through a porous cylinder was studied. The transformed differential equations describing the motion of Cu–H2O ...

    Authors: Khilap Singh, Alok Kumar Pandey and Manoj Kumar

    Citation: Journal of the Egyptian Mathematical Society 2021 29:1

    Content type: Original research

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  12. In this study, various fluid physical quantities effects such as diffusion-thermo, thermal-diffusion, thermal radiation, viscous dissipation, inclined magnetic field on unsteady MHD slip flow over a permeable ...

    Authors: T. L. Oyekunle and S. A. Agunbiade

    Citation: Journal of the Egyptian Mathematical Society 2020 28:51

    Content type: Original Research

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  13. Weak structure space (briefly, wss) has master looks, when the whole space is not open, and these classes of subsets are not closed under arbitrary unions and finite intersections, which classify it from typical ...

    Authors: H. M. Abu-Donia and Rodyna A. Hosny

    Citation: Journal of the Egyptian Mathematical Society 2020 28:49

    Content type: Original research

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  14. This article gives results on fixed complete lattice L-fuzzy pre-proximities, L-fuzzy grills and L-fuzzy filters. Moreover, we investigate the relations among the L-fuzzy pre-proximities , L-fuzzy grills and L-fu...

    Authors: A. A. Ramadan, M. A. Usama and A. A. Abd El-Latif

    Citation: Journal of the Egyptian Mathematical Society 2020 28:47

    Content type: Original research

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  15. Rough set theory over two universes is a generalization of rough set model to find accurate approximations for uncertain concepts in information systems in which uncertainty arises from existence of interrelat...

    Authors: O. A. Embaby and Nadya A. Toumi

    Citation: Journal of the Egyptian Mathematical Society 2020 28:46

    Content type: Original research

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  16. In this paper, we study a multiple scales perturbation and numerical solution for vibrations analysis and control of a system which simulates the vibrations of a nonlinear composite beam model. System of secon...

    Authors: M. Sayed, A. A. Mousa, D. Y. Alzaharani, I. H. Mustafa and S. I. El-Bendary

    Citation: Journal of the Egyptian Mathematical Society 2020 28:45

    Content type: Original research

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  17. The main results obtained in this paper are fixed point theorems for self and non-self GF-contractions on metric spaces endowed with a graph. Our new results are generalization of recently fixed point theorems fo...

    Authors: Awais Younus, Muhammad Umer Azam and Muhammad Asif

    Citation: Journal of the Egyptian Mathematical Society 2020 28:44

    Content type: Original research

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  18. Let (G,∗) be a finite group and S={xG|xx−1} be a subset of G containing its non-self invertible elements. The inverse graph of G denoted by Γ(G) is a graph whose set of vertices coincides with G such that two d...

    Authors: O. Ejima, K. O. AREMU and A. Audu

    Citation: Journal of the Egyptian Mathematical Society 2020 28:43

    Content type: Original research

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  19. In this paper, we introduce two reliable efficient approximate methods for solving a class of fractional Lane–Emden equations with conformable fractional derivative (CL-M) which are the so-called conformable H...

    Authors: Adyan M. Malik and Osama H. Mohammed

    Citation: Journal of the Egyptian Mathematical Society 2020 28:42

    Content type: Original research

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  20. In this paper, new forms of nano continuous functions in terms of the notion of nano -open sets called nano -continuous functions, strongly nano -continuous functions and nano -irresolute functions will b...

    Authors: Abd El-Fattah A. El-Atik and Hanan Z. Hassan

    Citation: Journal of the Egyptian Mathematical Society 2020 28:41

    Content type: Original research

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  21. This article presents the study of heat transfer under the influence of mixed convective flow of Eyring-Powell fluid over a stratified stretching sheet. The impact of heat generation/absorption is also discuss...

    Authors: Muhammad Bilal and Samia Ashbar

    Citation: Journal of the Egyptian Mathematical Society 2020 28:40

    Content type: Original research

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  22. In this paper, some new integrals involving k gamma function and k digamma function have been established. An integral is established involving k gamma function, and its special values are discussed. Similarly, s...

    Authors: Saeed Ahmed

    Citation: Journal of the Egyptian Mathematical Society 2020 28:39

    Content type: Original research

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  23. In this paper, we introduce a new class of fuzzy sets, namely, fuzzy ψ*-closed sets for fuzzy topological spaces, and some of their properties have been proved. Further, we introduce fuzzy ψ*-continuous, fuzzy ψ*

    Authors: M. A. Abd Allah and A. S. Nawar

    Citation: Journal of the Egyptian Mathematical Society 2020 28:38

    Content type: Original research

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  24. This paper presents the searching algorithm to detect a Markovian target which moves randomly in M-cells. Our algorithm is based on maximizing the discounted effort reward search. At each fixed number of time int...

    Authors: Mohamed Abd Allah El-Hadidy

    Citation: Journal of the Egyptian Mathematical Society 2020 28:37

    Content type: Original research

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  25. In this paper, we defined the fuzzy upper, fuzzy lower, and fuzzy boundary sets of a rough fuzzy set λ in a fuzzy approximation space (X,R). Based on λ and R, we introduced the fuzzy ideal approximation interior ...

    Authors: Ismail Ibedou and S. E. Abbas

    Citation: Journal of the Egyptian Mathematical Society 2020 28:36

    Content type: Original research

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  26. A hybrid second derivative three-step method of order 7 is proposed for solving first order stiff differential equations. The complementary and main methods are generated from a single continuous scheme throug...

    Authors: O. A. Akinfenwa, R. I. Abdulganiy, B. I. Akinnukawe and S. A. Okunuga

    Citation: Journal of the Egyptian Mathematical Society 2020 28:34

    Content type: Original research

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  27. Investigation of the effect of slip on natural convective flow and heat transfer of a viscous incompressible fluid confined within a channel made up of a long vertical wavy wall and a parallel flat wall is car...

    Authors: J. A. Gbadeyan, J. U. Abubakar and T. L. Oyekunle

    Citation: Journal of the Egyptian Mathematical Society 2020 28:32

    Content type: Original research

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  28. Let A be a commutative ring with 1≠0 and R=A×A. The unit dot product graph of R is defined to be the undirected graph UD(R) with the multiplicative group of units in R, denoted by U(R), as its vertex set. Two dis...

    Authors: Dina Saleh and Nefertiti Megahed

    Citation: Journal of the Egyptian Mathematical Society 2020 28:31

    Content type: Original Research

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  29. In this study, a new form of a quadratic spline is obtained, where the coefficients are determined explicitly by variational methods. Convergence is studied and parity conservation is demonstrated. Finally, th...

    Authors: Alberto José Ferrari, Luis Pedro Lara and Eduardo Adrian Santillan Marcus

    Citation: Journal of the Egyptian Mathematical Society 2020 28:30

    Content type: Original Research

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  30. A new family of univariate probability distributions called the T − R {Y} power series family of probability distributions is introduced in this paper by compounding the T − R {Y} family of distributions and the ...

    Authors: Patrick Osatohanmwen, Francis O. Oyegue and Sunday M. Ogbonmwan

    Citation: Journal of the Egyptian Mathematical Society 2020 28:29

    Content type: Original research

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  31. Topological indices are the molecular descriptors that describe the structures of chemical compounds. They are used in isomer discrimination, structure-property relationship, and structure-activity relations. ...

    Authors: Özge Çolakoǧlu Havare

    Citation: Journal of the Egyptian Mathematical Society 2020 28:28

    Content type: Original Research

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  32. We extend the applicability of a cubically convergent nonlinear system solver using Lipschitz continuous first-order Fréchet derivative in Banach spaces. This analysis avoids the usual application of Taylor ex...

    Authors: Debasis Sharma and Sanjaya Kumar Parhi

    Citation: Journal of the Egyptian Mathematical Society 2020 28:27

    Content type: Original Research

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  33. Equiform geometry is considered as a generalization of the other geometries. In this paper, involute and evolute curves are studied in the case of the curve α is an equiform spacelike with a timelike equiform pri...

    Authors: A. Elsharkawy

    Citation: Journal of the Egyptian Mathematical Society 2020 28:26

    Content type: Original Research

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  34. As a generalization of the classes of gwclosed (resp. gwopen, sgwclosed) sets in a weak structure space (X,w), the notions of ij-generalized wclosed (resp. ij-generalized wopen, ij-strongly generalized wclosed) s...

    Authors: H. M. Abu-Donia and Rodyna A. Hosny

    Citation: Journal of the Egyptian Mathematical Society 2020 28:24

    Content type: Original Research

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  35. Reduction of attributes in an information system (IS) is a basic step for IS analysis. The original rough set model of Pawlak depends on an equivalence relation which is strongly constraints. This paper aims t...

    Authors: Abd El Fattah A. El Atik

    Citation: Journal of the Egyptian Mathematical Society 2020 28:22

    Content type: Original Research

    Published on:

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