Buzz Bloom
Gold Member
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Hi Peter:PeterDonis said:A flat 3-torus universe with appropriate parameters is finite, flat, and isotropic. There can also be flat 3-torus geometries that are not isotropic, as discussed earlier, but that does not mean it's impossible for a flat 3-torus to be isotropic.
Do you know of any particular specified parameters that mathematically defines a theoretical 3-torus topologically shaped universe model which is finite, flat, isotropic, and homogeneous? For the purpose of defining such a model the homogeneous requirement can just be assumed.
I found some suggestions on the internet that some people believe it is possible, but I could not find any actual example. Nor could I find any argument supporting this concept that seemed rational to me.
In the absence of any even partially defined plausible model, I feel it necessary (for the present) to disbelieve it is possible. But, perhaps it is just a difficult problem, like the Riemann hypothesis, and someday I might be persuaded to change my mind.
Regards,
Buzz