India

Brahmagupta (Sanskrit: ब्रह्मगुप) (598 – 668 AD) was an Indian mathematician and astronomer. He has two important works on mathematics and astronomy, the theoretical “Brāhmasphuṣasiddhānta (628)” and the more practical “Khaṇḍakhādyaka (665)”. Brahmagupta is the scientist who first gave the rules for trading with zero. Since the proofs are not offered, it is not known where Brahmagupta's mathematics was derived from.