ZERO

What is Zero, One of the commonest questions which the readers of this archive ask is: Who discovered zero? The first thing to say about zero is that there are two uses of zero which are both extremely important but are somewhat different.  Neither of the above uses has an easily described history. It just did not happen that someone invented the ideas, and then everyone started to use them. Also it is fair to say that the number zero is far from an intuitive concept. Mathematical problems started as 'real' problems rather than abstract problems. Numbers in early historical times were thought of much more concretely than the abstract concepts which are our numbers today. One might think that once a place-value number system came into existence then the 0 as an empty place indicator is a necessary idea. read more at  history of Zero