India was a leader in mathematics and astronomy for thousands and thousands of years. This has not been a contribution of few individuals rather a continuous tradition that has evolved and captured through Sutras followed by teachings through Guru Kula system. To name a few Baudayana(Pythagorus Theorem), Bhaskara, Aryabhatta and Varahamihira. But there are lot many more who contributed in their own way all the way to Srinivas Ramanujan. India’s place-value system of numbers along with concept of zero simplified Math for the whole world. India has not got the credit it deserved. Even today Indian system of numbers is referred as arabic, whereas Arabs were just intermediaries.
Go through the whole journey in this video.