Brahmagupta (598–668) was an Indian mathematician and astronomer. Brahmagupta, whose father was Jisnugupta, wrote important works on mathematics and astronomy. In particular he wrote Brahmasphutasiddhanta (Correctly Established Doctrine of Brahma), in 628. The work was written in 25 chapters and Brahmagupta tells us in the text that he wrote it at Bhillamala which today's the city of Bhinmal. This was the capital of the lands ruled by the Gurjara dynasty. Life and work Brahmagupta was bo… (More on Brahmagupta)