Re: invariance of negative signature of the metric?

On Mar 7, 9:00 pm, Koobee Wublee <koobee.wub...@xxxxxxxxx> wrote:
On Mar 7, 7:02 am, iuval <cle...@xxxxxxxxxxxxxx> wrote:

Is there a theorem saying that if the metric starts out with a
negative signature on a spacelike surface (one or three eigenvalues
negative) that the field equations will preserve this negative
signature for all future and past?

No. The Spacetime equation is a short cut to write down all the
equations of the Lorentz transform into one single equation. It was a
lazy-man's way of doing so, but over the years, it became a Gospel
treasured by the SR and the GR worshippers. <shrug>

In other words, Koobee Wublee does not know what a metric signature
is.


What if there were 5 dimensions?

It depends on how neat of a concise equation you can write from all
the 5 equations of the Lorentz transform in 5 dimensions. <shrug>

.

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