Definition is a function of equal and opposite relativity. Dimensions of space are defined as a function of equal and opposite relativity. One point is defined relative to another. A point is defined relative to an anti-point. Mutual cancellation is non-definition. Definition is defined relative to non-definition and non-definition is cancellation .
A point is where any three axis converge. its virtual.
When dimension and antidimension cancel, then there is vacuum space.