Introduction:

Dr. Zafar Ullah is working as a Tenured Associate Professor of Mathematics at the University of Education, Lahore, Campus Dera Ghazi Khan. He has 20 years of experience in teaching and research. He earned his Ph.D. degree in the subject of Mathematics from Bahauddin Zakariya University, Multan, Pakistan.   He has supervised several BS and MPhil students in Mathematics. He has written a number of research articles that have been published in National and International impact factor journals. He has also attended various National and International conferences and workshops.