Aryabhata (Sanskrit: आर्यभट, ISO: Āryabhaṭa) or Aryabhata I (476–550 CE) was the first of the major mathematician-astronomers from the classical age of Indian mathematics and Indian astronomy. His works include the Āryabhaṭīya (which mentions that in 3600 Kali Yuga, 499 CE, he was 23 years old) and the Arya-siddhanta.
|Main interests||Mathematics, astronomy|
|Notable works||Āryabhaṭīya, Arya-siddhanta|
|Notable ideas||Explanation of lunar eclipse and solar eclipse, rotation of Earth on its axis, reflection of light by moon, sinusoidal functions, solution of single variable quadratic equation, value of π correct to 4 decimal places, diameter of Earth, calculation of the length of sidereal year|
|Influenced||Lalla, Bhaskara I, Brahmagupta, Varahamihira, Kerala school of astronomy and mathematics, Islamic Astronomy and Mathematics|