Bibhutibhushan Datta

During the 1920s and 1930s he created a reputation as an authority on the history of Indian mathematics.

In 1929 he retired from his professorship and left the university in 1933, and became a sannyasin (an ascetic, a person who has renounced worldly pleasures) in 1938 under the name Swami Vidyaranya.

History of Hindu Mathematics: A Source Book,[2] written by him jointly with Avadhesh Narayan Singh (1901–1954) became a standard reference work in the history of Indian mathematics.

[5] He published more than 70 research papers mostly related to the history of Indian mathematics.

[6] In the last years of his life, as Swami Vidyaranya, he lived mainly at Pushkar, a Hindu holy site in Rajasthan.