0 is not a number, it's undefined
It is literally the first Peano axiom that 0 is a natural number. In fact it is the only natural number that is defined in and of itself. All other natural numbers are defined by using the “successor” operation to add things to zero.
https://en.wikipedia.org/wiki/Peano_axioms
Are you a time traveler from the 5th century?
the what?
alt Hacker News
It is literally the first Peano axiom that 0 is a natural number. In fact it is the only natural number that is defined in and of itself. All other natural numbers are defined by using the “successor” operation to add things to zero.
https://en.wikipedia.org/wiki/Peano_axioms