[1] Univ El Oued, Fac Exact Sci, Dept Math, Lab Operator Theory & PDEs Fdn & Applicat, El Oued, Algeria
[2] Qassim Univ, ArRass, Coll Arts & Sci, Dept Math, Buraydah, Saudi Arabia
[3] Univ Oran 1, Lab Fundamental & Appl Math Oran LMFAO, Ahmed Benbella, Algeria
[4] Amar Telidji Laghouat Univ, Lab Pure & Appl Math, Laghouat, Algeria
[5] Qassim Univ, Coll Sci, Dept Math, Buraydah, Saudi Arabia