Thank you Xantox and DA for your replies. DA thanks for your visuals, always a good way to teach.
It seems that the infinite universe at the BB is notoriously well-known to the Art.
DA, I went to your referenced previous postings and am working my way through them. The math is always the best...
Thank you Chronos for the prompt reply.
I was actually hoping for a different answer, as yours makes it a little more difficult for me to understand the current cosmological paradigm.
Talking about the Universe being infinite seems popular right now, with Max Tegmark talking about it...
Several books have indicated that the Universe was infinite at the time of the BB. This was in "Gravitation" by Misner, et al., as an excercise. This would only be true, according to Misner, with the flat and hyperbolic solutions to GR, not with the spherical solutions.
What would the...