dr bob's Princeton gateway to the mathematics of general relativity
and Italian mathematicians
undergraduate physics major 1970-1974
Luigi Bianchi and the possible homogeneous 3 spaces and their groups of isometries
bob's Princeton people, including Godel
Ricci and Levi-Civita with Michael Spivak Princeton connection
Abe Taub, PhD advisor and the father of spatially homogeneous cosmology