[1] Imam Abdulrahman Bin Faisal Univ, Coll Sci & Humanities, Dept Math, Jubail Ind City 31441, Saudi Arabia
[2] Imam Abdulrahman Bin Faisal Univ, Coll Sci, Dept Math, Dammam 35811, Saudi Arabia
[3] Taibah Univ, Coll Sci, Dept Math, Al Madinah Al Munawarah, Saudi Arabia
[4] Mansoura Univ, Fac Sci, Dept Math, Mansoura 35516, Egypt