1. Department of Mathematics, Faculty of Sciences, University of Ibn Khladoun, BP P 78 Zaaroura, Tiaret 14000, Algeria
2. Department of Mathematics, LTM, University of Batna 2, Mostefa Ben Boulaïd, Fesdis, Batna 05078, Algeria
3. Department of Mathematics, Faculty of Sciences, University of Ha’il, Ha’il 55425, Saudi Arabia