Department of Mathematics, Indira Gandhi National Tribal University, Lalpur, Amarkantak, Madhya Pradesh 484 887 , India

Department of Mathematics, Shanghai University, China , China

Georgia

Chake No. 128-A/TDA, Tehsil And District Layyah, Punjab , Pakistan

Department of Mathematical and Natural Sciences Faulty of Engineering, Egyptian Russian University, Nasr City, Cairo , Egypt

Department of Mathematics and Statistics, School of Basic Science and General Studies, Margaret Lawrence University, Galilee, Delta State , Nigeria