Author Info
Peter V. O?Neil has more than 42 years of experience teaching mathematics to undergraduate and graduate students. For the last 30 years he has been Professor of Mathematics in the University of Alabama at Birmingham.
A PhD in mathematics from Aligarh Muslim University, Santosh K. Sengar has been involved in teaching and research for over ten years. He is currently Assistant Professor in Indraprastha Engineering College, Ghaziabad (affiliated to UPTU). He has contributed several papers in national and international journals. His areas of research interest include non-linear analysis (metric fixed-point theory), differential equations, numerical analysis, and graph theory.