The book he wrote presents the first known description of binary numeral system.
Pingala is the traditional name of the author of the Chandaḥśāstra (the first known book that descrives the use of a binary numeral system). Little is known about Piṅgala himself, it is theorised that he might have been born between the 6th and 2nd century BCE in India.
Brahmagupta was the idealizer of the concept of "zero"
Brahmagupta was an Indian mathematician and astronomer. He is the author of two early works on mathematics and astronomy. According to his commentators, Brahmagupta was a native of Bhinmal. Brahmagupta was the first to give rules to compute with zero. The texts composed by Brahmagupta were composed in elliptic verse in Sanskrit, as was common practice in Indian mathematics. As no proofs are given, it is not known how Brahmagupta's results were derived.
Advanced in the use of 0
Bhaskara II was an Indian mathematician and astronomer born in Karnataka in 1114. He is known for various contributions to mathematics such as Solved quadratic equations with more than one unknown, and found negative and irrational solutions, Calculated the derivatives of trigonometric functions and formulae and the advanced use of 0.
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quest.eb.com/search/115_3917347/1/115_3917347/cite. Accedido 28 Mar 2017.
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quest.eb.com/search/309_1155417/1/309_1155417/cite. Accedido 29 Mar 2017.