1. Department of Mathematics, University of Peshawar, Peshawar 25120, Khyber Pakhtunkhwa, Pakistan
2. Department of Basic Sciences and Humanities, CECOS University of IT and Emerging Sciences, Peshawar 25000, Khyber Pakhtunkhwa, Pakistan
3. Department of Computing, Mathematics and Electronics, “1 Decembrie 1918” University of Alba Iulia, 510009 Alba Iulia, Romania
4. Faculty of Mathematics and Computer Science, Transilvania University of Brasov, Iuliu Maniu Street 50, 500091 Brasov, Romania
5. Faculty of Science and Arts, Mohail Asser, King Khalid University, Abha 62529, Saudi Arabia