[1] Xiangtan Univ, Fac Math & Computat Sci, Xiangtan 411105, Hunan, Peoples R China
[2] King Abdulaziz Univ, Fac Sci, Nonlinear Anal & Appl Math NAAM Res Grp, Jeddah 21589, Saudi Arabia
[3] Natl Inst Technol, Dept Humanities & Sci, Farmagudi 403401, Goa, India
[4] Guelma Univ, Dept Math, Guelma 24000, Algeria