What Is Pythagorean Theorem?

There's something special about particular patterns of neural firings. You can instantiate mathematical truth in different physical forms like ink and squiggles on paper. But where? Where is the actual pythagorean theorem? It doesn't exist in space. We only have access to that abstraction once we come to an understanding of it. The same is true of the next highest prime number, the next highest prom number. In all these different representations, they have one thing in common. They all represent the one thing, which is that prime number.