So technically there is no such thing as, 0b0, only 0 without any special prefix, nomenclature or units. 0.0 does not exist. 0px often shows up in CSS. Again, meaningless. Zero is only zero, undefined. All we know about it is its position in the real number line. The zero of y = x ** 2.

Obviously we can list an infinite number of functions with 0 as their zero. y = - ( x ** 2 ) and y = abs( x ) come to mind, for starters. This is only food for thought in terms of 0.

It is technically a convenience that we can treat zero with such definiteness when it is undefined to begin with. In real terms, x in the quadratic and the absolute equations is approaching zero, on the one hand from the left, the negative, and on the other from the right, the positive. Zero is the limiting value for each domain.