1. Department of Mathematics, Science Faculty, King Abdulaziz University, Girls Campus, Jeddah, Saudi Arabia
2. Department of Mathematics, Balikesir University, Science and Art Faculty, Campus, Balikesir, Turkey
3. Department of Mathematics, Science Faculty, King Abdulaziz University, Jeddah, Saudi Arabia + Department of Mathematics, Science Faculty, Selcuk University, Konya, Turkey