graph visualization isn't a requirement for the Physics Derivation Graph

The central concept of the Physics Derivation Graph is that there are mathematical links between expressions. This means that navigating the content can be intuitively done using a graph. However, navigating a graph visually doesn't scale well.

The Physics Derivation Graph doesn't have to be presented as a graph. A derivation is typically presented in a linear format.

Storing the content of the Physics Derivation Graph does not require a graph storage database.

technology the Physics Derivation Graph builds on

The Physics Derivation Graph builds on prior technologies. In practice, the need was identified, created from scratch, then found to have been already done similarly by other people.

EquationMap

Gellish

Godel numbering