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|    sci.physics.research    |    Current physics research. (Moderated)    |    17,516 messages    |
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|    Message 16,913 of 17,516    |
|    Jos Bergervoet to Rock Brentwood    |
|    Re: Physics bitten by reverse Alan Sokal    |
|    07 Jan 22 08:04:12    |
      From: jos.bergervoet@xs4all.nl              On 22/01/05 10:31 AM, Rock Brentwood wrote:       > On Tuesday, January 4, 2022 at 7:37:11 AM UTC-6, Rock Brentwood wrote:        ...        ...       >> has come to my attention, only now, because the twins involved in it       >> have died together on the same day yesterday.       >       > One died on January 3, the other late in December.              The stationary one or the one that travelled?! (Just curious how       the paradox is now resolved..)              >       > The key point here       >> 1A. What Is "Zero Size"?       >       > is that the metric does not determine whether something is squashed down       > to a single point.       >       > Dimension is not a metric property, but a topological property. So,       > regardless of whether the spatial part of the metric is 0 or not,       > 3-dimensions means 3-dimensions.              Why? If I say there are 5 dimensions, but the metric tensor entries       involving the 2 "new" directions are all zero, how can you see the       difference?              --       Jos              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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