I know there are at least two questions on this site that ask about the negative dimensions. But I want to ask something more than that.
We have a number line. It contains all the real numbers we can imagine of. But there are also complex numbers like (1+5i) that extend the number line into a complex plane. So, the number line that contains all possible number sets, not only the real ones is really a 2d plane, not a line.
We can say the same for a 2d graph. It contains all the real numbers on both the $x$ and the $y$ axis. But if we make the 2d function so that it can hold not only the real number pairs, but also the imaginary number pairs like (1-2i, 9+14i), we can see that a 2d graph really is a 3d graph.
Same thing for 3d. If we have an 3d pair (1+i, -5, -3-9i), then we extend the function to 4d. It is still 3d function because it has three coordinates. It only has complex numbers as its coordinates, which implies that 3d function has 4 dimensions.
So as we can see, (theoritecally) an $n$ dimension graph has $n+1$ dimensions.
Is this thinking correct, and does that mean, that $0$th dimension is realy a point extended into an imaginary-only, not real-valued line, and the true $0$th dimension is the $-1$st dimension? Does my reasoning even make sense at all?