Einstein introduces his cosmological constant which attributes, in the form of an assumption, a structural uniformity – of the distribution of matter and radiation
Which I took to mean that the cosmological constant was the mathematical expression of the cosmological principle. I can't find any explicit statement of this anywhere, so I now assume I'm wrong. What is the relationship then (if any) between the constant and the principle? And secondly, if the cosmological constant isn't the means by which the cosmological principle exerts influence over the Big Bang Model (BBM), how significant is the principle for the BBM? In what ways?