It is true ZERO is a concept used in India,before Arabs started using it.but to say Aryahbatta invented Zero is a idiotic argument. Muslims never denied that,Infact acknowldged that as Hind numbers before westerns called it Arabic numbers.. But i dont understand your argument?just because of zero how can you deny what i am saying..? Do you know Mayans and samirians had number systems too?it failed because it was never used as extensivly as Arabs used Hindu nu,mber system