Brahmagupta

Brahmagupta (Sanskrit: ब्रह्मगुप्त; listen) (598–668 AD) was an Indian mathematician and astronomer who wrote many important works on mathematics and astronomy. His best known work is the Brāhmasphuṭasiddhānta (Correctly Established Doctrine of Brahma), written in 628 in Bhinmal. Its 25 chapters contain several unprecedented mathematical results.