Mr Pradip Narain, popularly known as PN Sir, taught undergraduate and postgraduate students of Mathematics for over forty years. After topping Delhi University in MA Mathematics from St Stephen’s College, he taught in the Departments of Mathematics, Economics & Commerce at Hindu College, St Stephen’s College and Jesus & Mary College, as well as at the Department of Business Economics, University of Delhi.
Mr Narain also holds an MPhil in Mathematics Education from the prestigious University of Cambridge (UK), where he went on a British Council Fellowship. His thesis on ‘Teaching of Proofs in Real Analysis’ won the best thesis award. A paper based on this was published by The Korea Society of Educational Studies in Mathematics.
After taking voluntary retirement from Jesus & Mary College, Mr Narain became the founder director of the Institute of Mathematics & Economics, New Delhi, which provided quality coaching to undergraduate students of Delhi University.
PN Sir is widely regarded as one of the finest Mathematics teachers, who transformed the lives of thousands of students during his long and illustrious career. His crystal clear lecture notes in diverse areas of Mathematics were the lifeline for generations of students of Delhi University. This book is based on his lecture notes in Elementary Real Analysis, modified according to the current curriculum prescribed by the NEP 2020