Indian Mathematicians

It is no doubt that the world today is greatly indebted to the contributions made by Indian mathematicians. One of the most important contribution made by them was the introduction of decimal system as well as the invention of zero. Here are some the famous Indian mathematicians dating back from Indus Valley civilization and Vedas to Modern times.
Aryabhata

Aryabhata worked on the place value system using letters to signify numbers and stating qualities. He discovered the position of nine planets and stated that these planets revolve around the sun. He also stated the correct number of days in a year that is 365.

Brahmagupta
The most significant contribution of Brahmagupta was the introduction of zero(0) to the mathematics which stood for “nothing”.

taken from

http://www.famous-mathematicians.com/top-10-indian-mathematicians-contributions/