On 2/8/2025 11:04 PM, Alan Grayson wrote:
On Saturday, February 8, 2025 at 3:26:33 PM UTC-7 Brent Meeker wrote:
On 2/8/2025 12:47 AM, Alan Grayson wrote:
I can't recall on which thread I made the argument, and Clark
agreed, that if the universe has a finite age, it cannot be
infinite in spatial extent. In response, Clark and Brent claimed
it could've began as infinite. Isn't there a theorem, which might
have been proven by Penrose, that the contracting universe
Only the observable universe, if I recall correctly.
Applying the Penrose-Hawking Singularity Theorem, running the clock
backward implies the universe doesn't converge to a point of zero
volume, but to a BH, and that's the whole universe, not just the
observable universe. AG
Anything inside a non-rotating black hole, falls into the singularity,
which classically is a point. But that black hole is a spherically
symmetry structure with an event horizon in an infinite asymptotically
flat universe. And that's also what the Penrose singularity theorem
applies to, a structure embedded in an otherwise flat universe. So it
doesn't apply to a universe. Furthermore, Roy Kerr says Penrose's proof
makes unjustified assumptions in the case of rotating black holes and is
invalid.
Brent
Brent
must converge to a point or zero volume containing all matter and
energy? What is the name of that theorem, assuming it exists? AG --
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