In India
Japan.
I believe the Aztecs mathematicians were first to have a concept of zero and negative numbers.
The zero symbol of 0 originated from the Indian subcontinent.
aryabhatta first invented zero in India
R.A Bhatta invented the number zero
Zero wasn't invented by a single known person called aryabtta a Indian scientist.
zero was invented by aryabhatt
Aryabhat
brahmabhatta
It was digits followed by zero
Chinese mathematician Ch'in Chiu - Shao invented the zero in 1247