Einstein_Field_Equations.md

http://www.scholarpedia.org/article/Exact_solutions_of_Einstein%27s_equations

https://en.wikipedia.org/wiki/Pseudo-Riemannian_manifold

https://en.wikipedia.org/wiki/Riemannian_geometry

https://ncatlab.org/nlab/show/pseudo-Riemannian+metric

https://en.wikipedia.org/wiki/Differential_geometry#:~:text=Differential%20geometry%20is%20a%20mathematical,linear%20algebra%20and%20multilinear%20algebra

https://en.wikipedia.org/wiki/Elliptic_operator

Differential_operators

https://ncatlab.org/nlab/show/Levi-Civita+connection

https://en.wikipedia.org/wiki/Parallel_transport

https://en.wikipedia.org/wiki/Grothendieck_connection

https://en.wikipedia.org/wiki/Weyl_tensor

https://www.ligo.caltech.edu/page/what-is-ligo

https://en.wikipedia.org/wiki/Christoffel_symbols

https://en.wikipedia.org/wiki/Category:Mathematical_physics

https://ncatlab.org/nlab/show/Einstein-Hilbert+action