Gave a sine table, a value of pi accurate to four decimal places, and the kuttaka method for indeterminate equations.
Aryabhatiya · Ganitapada 2.1–2.5
Commentary: Bhashya of Bhaskara I
499 CE · exact · established
The Aryabhatiya states its own year of composition
Kusumapura — today Pataliputra / Patna, Bihar (probable)
Mathematics · CBSE · ICSE · IGCSE · IB · State — Ganita — Pati-ganita (arithmetic), Bija-ganita (algebra), Kshetra-ganita (geometry). Place value and zero, fractions, ratio and proportion, series, quadratic and indeterminate equations, areas and volumes, similar figures.
Evidence: traditionally attributed · no modern scholarly reference recorded yet.