All is Number. Nature is Mathematics patent. Mathematics is Nature latent. Mathematics is primal.
Nature is produced.
That curriculum was called Quadrivium. It was used throughout the Mediterranean world, including to North and East Africa, which were Greek areas long before Alexander's time. Roman teachers subsequently amended Quadrivium to seven parts, calling their configuration Septivium. By custom, Quadrivium is attributed to quasi-Pythagoreans, Plato and others. But this is a careless attribution.