1. Department of Mathematics, Collage of Science, University of Ha’il, Ha’il 2440, Saudi Arabia
2. Section of Mathematics, International Telematic University Uninettuno, Corso Vittorio Emanuele II, 39, 00186 Roma, Italy
3. Department of Mathematics, Collage of Science, Jazan University, Jazan 45142, Saudi Arabia
4. Department of Mathematics, Faculty of Science, Mansoura University, Mansoura 35516, Egypt