3+1 Formalism in General Relativity

SageMath notebooks

SageMath is a modern and powerful computer algebra system based on Python; it is open-source and freely downloadable from this page.

Visit the SageManifolds home page for an overview of the differential geometry and tensor calculus capabilities of SageMath.

Some SageMath Jupyter notebooks relevant to the 3+1 formalism are posted here.


Eric Gourgoulhon / 2026-01-23