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Aryabhata ( ISO: Āryabhaṭa) or Aryabhata I [3] [4] (476–550 CE) [5] [6] 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) [ 7 ] and the Arya- siddhanta .
Aryabhata, mathematician and astronomer, author of Aryabhatiya (476–550 CE) Early medieval period (500–1000 CE) Varahamihira, astronomer (5th–6th century CE)
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Following the Ganitapada, the next section is the "Kalakriya" or "The Reckoning of Time." In it, Aryabhata divides up days, months, and years according to the movement of celestial bodies. He divides up history astronomically; it is from this exposition that a date of AD 499 has been calculated for the compilation of the Aryabhatiya. [4]
However, these theories are inaccurate, as Varāhamihira must have lived after Aryabhata (born 476 CE), whose work he refers to. The particulars of the date mentioned by Varāhamihira - Shukla pratipada of the Chaitra month of the Shaka year 427 - align accurately with 20-21 March 505 CE.
Bhāskara (c. 600 – c. 680) (commonly called Bhāskara I to avoid confusion with the 12th-century mathematician Bhāskara II) was a 7th-century Indian mathematician and astronomer who was the first to write numbers in the Hindu–Arabic decimal system with a circle for the zero, and who gave a unique and remarkable rational approximation of the sine function in his commentary on Aryabhata's ...
Aryabhata II also deduced a method to calculate the cube root of a number, but his method was already given by Aryabhata I, many years earlier. Indian mathematicians were very keen to give the correct sine tables since they played a vital role to calculate the planetary positions as accurately as possible.
The famous Aryabhata and Varāhamihira belong to this age. The Gupta established a strong central government which also allowed a degree of local control. Gupta society was ordered in accordance with Brahmanical beliefs. This included a strict caste system, or class system.