S.E. Fadugba
(1), Mariem Elkaf
(2), Karam Allali
(3)
(1)
Department of Mathematics, Ekiti State University, Ado Ekiti, Nigeria, Nigeria,
(2)
Laboratory of Mathematics, Computer Science and Applications, Faculty of Sciences and Techniques Mohammedia, University Hassan-II Casablanca, Mohammedia, Morocco, Morocco,
(3)
Laboratory of Mathematics, Computer Science and Applications, Faculty of Sciences and Techniques Mohammedia, University Hassan-II Casablanca, Mohammedia, Morocco., Morocco