| Aleksandr Friedmann: A biography with reference to contemporaries, and a list of references. |
| Georg Riemann: Although he died before the development of general relativity, his work in non-Euclidean geometries is very important to studying a curved spacetime. |
| Georgio Ricci-Curbastro: The mathematician who developed much of tensor calculus before Einstein found a use for it. |
| Hendrik Lorentz: Brief biography. |
| Hermann Minkowski: A brief biography with quotations and a bibliography. |
| Hermann Weyl: One of the first people to combine general relativity with the laws of electromagnetism |
| Karl Schwarzschild: A brief biography with reference to contemporary mathematicians and theories. |
| Karl Schwarzschild: The man who solved Einstein's equations and predicted the existence of black holes |
| Luigi Bianchi: A mathematician who developed many theorems regarding Riemannian geometry |
| Marcel Grossmann: A brief biography on Marcel Grossmann, a classmate of Einstein who was the first to find a connection between tensor calculus and the theory of relativity. |
| Southampton GR Explorer: An introduction to Einstein's theory of General Relativity and related topics. Includes text, pictures and movies. |
| Willem DeSitter: Mathematician who studied solution to general relativity and developed DeSitter space |
Classical
