•Section
5.1, the “Cosmological Principle”
–Isotropic,
homogenous, uniform expansion
–Can
write relativistic equations in different forms (famous
names cited here…)
–Weyl’s
postulate: “The particles of
the substratum (representing the nebulae) lie in space-time
on a bundle of geodesics diverging from a porint in the
(finite or infinite) past.”