[citation needed] His research career started at the Allahabad University under the supervision of Prof. B. N. Prasad on summability theory but soon he joined Prof. Amiya Charan Banerjee to work in differential equations.
The results of his work (with Prof. Banerji, published in Proceeding of National Academy of Sciences, 1938) are included in the book of Erich Kamke.
There he worked together with Donald Howard Menzel and Hari Kesab Singh in the field of non-linear gases.
[3] His work with the Boltzmann equation led to his well-known BGK collision model in 1954 together with Eugene P. Gross and Max Krook.
These days, the BGK collision operator is essential for the recent development of lattice Boltzmann automata methods.
[7] After he died on 5 October 1976 at Allahabad, the Illustrated Weekly of India paid a tribute to him through an article on him by the well-known science writer Jagajit Singh.