1. Department of MathematicsSichuan University of Science and Engineering Zigong 643000 China
2. School of Mathematical SciencesChongqing Normal University Chongqing 401331 China
3. College of Mathematics and StatisticsShenzhen University Shenzhen 518060 China
4. Faculty of EngineeringKing Abdulaziz University Jeddah 21589 Saudi Arabia
5. Department of Mathematics, Faculty of ScienceKing Abdulaziz University Jeddah Saudi Arabia
6. Department of MathematicsQuaid‐I‐Azam University Islamabad Pakistan