On Thursday, January 23, 2020 at 2:52:50 PM UTC-7, Lawrence Crowell wrote: > > That is a toughy. A closed spherical space with a huge radius of curvature > may be virtually indistinguishable from an infinite universe. The only > prospect for distinguishing between the two cases might be with the quantum > field implications of the two.
How does topology distinguish them? ISTM, that a sphere and a plane are both closed, since each contains its accumulation points. No? AG -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/3b2aaf07-59ce-4030-afa1-ef12fd81d5d0%40googlegroups.com.
