Bhāskara I

Indian mathematician and astronomer (600–680)

Bhāskara I (c. 600 – c. 680) was a 7th-century Indian mathematician and astronomer of the classical Siddhānta school of Jyotiṣa (astronomy and applied mathematics—one of the six Vedāngas or auxiliary disciplines of Vedic scholarship). He was the first to write numbers in the Hindu–Arabic decimal system with a circle for the zero, and who gave a unique and remarkable rational approximation of the sine function (jyā) in his commentary on Aryabhata's work. This commentary, Āryabhaṭīyabhāṣya, written in 629, is among the oldest known prose works in Sanskrit on mathematics and astronomy to be completely extant today.

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