Aryabhata

 

Aryabhata  or Aryabhata I (476–550 CE)^[ was the first in the line of great mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya (499 CE, when he was 23 years old)and the Arya-siddhanta.
The works of Aryabhata dealt with mainly mathematics and astronomy. He also worked on the approximation for pi.