1. Department of Mathematics, University of Malakand, Chakdara Dir(L), 18000, Khyber Pakhtunkhwa, Pakistan
2. Section of Mathematics, international Telematic, University Uninettuno, Corso Vittorio Emanuele Ⅱ, 39, Roma 00186, Italy
3. Department of Mathematics, College of Science, Taif University, Taif 21944, Saudi Arabia