1. Department of Mathematics, College of Sciences and Arts, Najran University, Najran 66262, Saudi Arabia
2. Department of Mathematics and Statistics, University of Victoria, Victoria, BC V8W 3R4, Canada
3. Mathematics Department, Faculty of Science, Cairo University, Giza 12613, Egypt
4. Department of Mathematics, School of Digital Technologies, Tallinn University, 10120 Tallinn, Estonia
5. Departamento de Matemáticas y Física, Universidad Autónoma de Aguascalientes, Aguascalientes 20131, Mexico
6. Applied Research Center for Metrology, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia