The decimal place-value system is traditionally credited to the 5th-century Indian mathematician

Aryabhata (born 476 CE) is the 5th-century mathematician-astronomer traditionally credited with the decimal place-value system. Brahmagupta (7th century), Bhaskara (7th or 12th century, depending on which of the two is meant) and Madhava of Sangamagrama (14th century) all came later.