The CBI took over the Gyaneshwari Express investigation from the state police in June, and announced a reward of Rs 3 lakh for information leading to the arrest of three prime accused -- Bapi Mahato, Umakanto Mahato and Asit Mahato.
The citation for his medal -- awarded at the International Congress of Mathematicians in Rio de Janeiro -- highlights his "profound contributions to an exceptionally broad range of subjects in mathematics" and his "strikingly far-reaching conjectures."
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