Professor Uday Bhan Tewari was born on 18th June 1944 in a village Mukeripur, Ambedkar Nagar, Uttar Pradesh. He passed away on 2nd July, 2019 around 4pm due to a massive heart attack at his residence in Azad Nagar, Kanpur. He is survived by his wife daughter, son and grand children.
U.B. Tewari, popularly known as UBT, was a distinguished mathematician and has indeed left a legacy. After his bachelor and master's degree from Lucknow University, he joined IIT Kanpur in 1964, as a Ph.D. student and then later moved to University of California Berkeley for a Ph.D in 1967. At Berkeley he worked with a Professor Henry Helson, a leading figure in Harmonic Analysis,and obtained the degree in the year 1969. After his Ph.D he moved to Institut Mittag-Leffler, Dijursholm, Sweden for a year (1969-1970). He chose to work at IIT Kanpur as a faculty member in the year 1970 and became a full professor at a young age of 37 and remained there till 2009.
UBT was instrumental in making IIT Kanpur Mathematics Department a serious place for mathematics, Analysis in particular. As a consequence, IIT Kanpur has produced many brilliant mathematicians. Through his inspiring and rigorous teaching he made many difficult books and concepts easy to understand for generations of mathematicians trained at IIT Kanpur.Most of his students owe their solid foundation of mathematics to him. They respect him enormously.
He started an Harmonic Analysis school at IIT Kanpur and brought colleagues from other reputed Institutes together. This has now become a large family consisting of colleagues, students, grand students and great grand students.
He has been recognised for his work by receiving many accolades such as Shanti Swarup Bhatnagar Prize, Meghnad Saha Award for Research in Theoretical Sciences and Fellow, National Academy of Sciences, Allahabad.
UBT shared a beautiful relationship with his colleagues. He was loved and respected for his forthrightness, firm beliefs and sensitivity. Many sought his advice in time of need he never failed them.
There are many stories concerning UBT's witty and humorous remarks, which are remembered fondly whenever his former students and friends meet.