Aryabhata is the first of the great astronomers of the classical age of India. He was born in 476 AD in Ashmaka but later lived in Kusumapura, which his commentator Bhaskara I (629 AD) identifies with Patilputra (modern Patna). Aryabhata gave the world the digit "0" (zero) for which he became immortal.
Evaluation, Significance, Contributions of Zero
Zero became an important part of the number system in India. Even in the past mathematical equations were chanted in poetry. Words meaning void, sky, space represent nothingness or zero. Pingala an Indian scholar used binary numbers and he was the first who use ‘shunya’ for zero as a Sanskrit word. Brahmagupta a scholar and mathematician in AD 628 first time defined zero and its operation and developed a symbol for it which is a dot underneath the numbers. He had also written rules for mathematical operations like addition and subtraction using zero. Then, Aryabhatta a great mathematician and an astronomer used zero in the decimal system.From the above article it is clear that zero is an important invention of India, which gave a new direction to mathematics and makes it more logistic.
If Zero would not be there then.........
Nothing would have happened. We must be still searching the notation for zero. Aryabhatta’s greatest contribution to the world is that he has given the shape for the null value. implicitly used the notation zero. Even before, Aryabhatta(or may be on his time 3rd century) the null values are discussed in Brahmi numerals. His contribution to the place value system implicitly had a notation to denote the powers of tens with null coefficients. Note also that he didnot use numeric symbols to denote the numbers whereas he used alphabets to denote the numbers. That gave ‘zero’.