1. Department of Mathematics, Graduate School of Natural and Applied Sciences, Erzincan Binali Yıldırım University, Yalnızbağ Campus, 24100, Erzincan, TURKEY
2. Department of Mathematics, Faculty of Arts and Sciences, Erzincan Binali Yıldırım University, Yalnızbağ Campus, 24100, Erzincan, TURKEY