3 moments

1. Birth at Bhillamāla

   0598-01-01 · Bhinmal, Rajasthan, India

   

   Brahmagupta was born at Bhillamāla, identified with modern Bhinmal in Rajasthan. This is the earliest documented physical-presence event in the surviving biographical tradition. The year is traditionally given as 598 CE; the modern settlement coordinate represents ancient Bhillamāla.

2. Composed the Brāhmasphuṭasiddhānta at Bhillamāla

   0628-01-01 · Bhinmal, Rajasthan, India

   

   At Bhillamāla, Brahmagupta wrote the Brāhmasphuṭasiddhānta, his major mathematical and astronomical treatise. The work includes his influential treatment of zero and negative numbers. The cited biography identifies the work as written in 628 and identifies ancient Bhillamāla with modern Bhinmal.

3. Death at Ujjain

   0668-01-01 · Ujjain, Madhya Pradesh, India

   

   The canonical biographical account places Brahmagupta's death in 668 CE and presumes that it occurred at Ujjain, the central Indian astronomical centre to which he had later moved. Both the exact death year and Ujjain attribution are reported in the source, but the place is explicitly presumptive.