6th-century Indian mathematicians

Aryabhata (, ) 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.

Varāhamihira ( 20/21 March 505 – 587), also called Varāha or Mihira, was an ancient Indian mathematician, astrologer-astronomer who lived in or around Ujjain in present-day Madhya Pradesh, India.

Dignāga (also known as Diṅnāga, ) was an Indian Buddhist philosopher and logician. He is credited as one of the Buddhist founders of Indian logic (hetu vidyā) and atomism. Dignāga's work laid the groundwork for the development of deductive logic in India and created the first system of Buddhist logic and epistemology (pramāṇa).

Yativṛṣabha (Yativrishabha), also known as Jadivasaha, was a mathematician and Jain monk. He is believed to have lived during the 6th century, probably during 500–570. He studied under Arya Manksu and Nagahastin. He lived and worked between the periods of two great Indian mathematicians, Aryabhata (476 – 550) and Brahmagupta (598-668).