Aether or whatever

Researcher a écrit :

There is no end to an Euclidean straight line and Ether and therefore
Universe is limitless.

Take your "therefore" back.

Euclidian space is limitless but what tells you that Universe is an
euclidian space,
apart from intuition ?

I assisted to a very nice conference where the Universe was presented
as
having a nice finite topology (as a sperical topology) and was by
consequence finite.

You can't tell if the Universe has a spherical (finite) or an euclidian
(infinite)
topology or something else.

My personal favorite topology for the universe comes from this
conference,
it was a Poincaré's dodecahedra topology.

On Mon, 16 Oct 2006 12:07:45 -0700, ganymede.jupiter wrote:

Researcher a écrit :

There is no end to an Euclidean straight line and Ether and therefore
Universe is limitless.

Take your "therefore" back.

Euclidian space is limitless but what tells you that Universe is an
euclidian space,
apart from intuition ?

I assisted to a very nice conference where the Universe was presented as
having a nice finite topology (as a sperical topology) and was by
consequence finite.

You can't tell if the Universe has a spherical (finite) or an euclidian
(infinite)
topology or something else.

My personal favorite topology for the universe comes from this conference,
it was a Poincaré's dodecahedra topology.

A lot of people like that one. But I thought it had run up against some
problems -- IIRC it's possible to predict, based on (?? anisotropies in
the CMBR or some such ??) just how large the universe must be if it's
dodecahedral, and therefore how far out you would need to look to start
seeing the same thing in opposite sides of the sky ... and we've passed
that point with Hubble photos of the last couple years, and have not seen
the predicted duplication.

Corrections on this one more than welcome, of course!


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A nice comment which I will reply after thinking more about it.
Thank you

Researcher

wrote in message
ups.com...
Researcher a écrit :

There is no end to an Euclidean straight line and Ether and therefore
Universe is limitless.

Take your "therefore" back.

Euclidian space is limitless but what tells you that Universe is an
euclidian space,
apart from intuition ?

I assisted to a very nice conference where the Universe was presented
as
having a nice finite topology (as a sperical topology) and was by
consequence finite.

You can't tell if the Universe has a spherical (finite) or an euclidian
(infinite)
topology or something else.

My personal favorite topology for the universe comes from this
conference,
it was a Poincaré's dodecahedra topology.




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