Re: invariance of negative signature of the metric?

On Mar 7, 1:09 pm, "Ken S. Tucker" <dynam...@xxxxxxxxxxxx> wrote:
I dislike replying to Gisse,
my Gerbil knows more physics.
Anyway here goes..........

On Mar 7, 1:47 pm, Eric Gisse <jowr...@xxxxxxxxx> wrote:



On Mar 7, 12:25 pm, "Ken S. Tucker" <dynam...@xxxxxxxxxxxx> wrote:
On Mar 7, 12:43 pm, "Dirk Van de moortel" <dirkvandemoor...@ThankS-NO-

SperM.hotmail.com> wrote:
Ken S. Tucker <dynam...@xxxxxxxxxxxx> wrote in message
947bfea7-24d3-46b7-87d5-d71dbbd02...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx

Hi Igor, I like your posts but I think
you are unnecessarily putting a chain
on your brain....

On Mar 7, 10:53 am, Igor <thoov...@xxxxxxxxxx> wrote:
On Mar 7, 10:02 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?
What if there were 5 dimensions?
-Iuval

Think of it this way. If the signature were to vary from positive to
negative or vice versa, there must be an intermediate state having
signature zero. But that would be singular. So it's not allowed to
change.

Consider a 1D orthogonal axis.

Consider 1 hand clapping.

Dirk Vdm

The mathematicians advise only the
need for a "proper transformation",
such that the Jacobian matrix is
non-zero, hence enabling a "regular
transformation" to occur, allowing
imaginary coordinates.

(If anyone uses a ruler marked off
with unit distances of sqrt(-1),
that's ok with me, it's freedom).

Where spacetime is concerned, all
that is needed is too prove one can
derive,

ds^2 = (cdt)^2 - dr^2

as in Eq,(12) here,http://physics.trak4.com/modern-spacetime.pdf

Everything your paper is wrong. Stop citing it.

The "paper" nulls g14 in the ds^2,
which means the Kerr metric does not
apply and "frame fragging" is nulled.

The paper is wrong in both basic application of general relativity and
basic understanding of electromagnetic theory. The position is
indefensible, yet you try anyway.


IFF OTOH, "frame dragging" is confirmed
by repeatable experiment, I'll retire and
encourage developement of nonsymmetrical
metrics, propagated via the Guv,conveying
spin, via g-fields.

Gravity Probe B and the LAGEOS & LAGEOS II satellite missions have
observed frame dragging.


that uses a (++++) signature, as spec'd by
the ISU.

ISU says no such thing.

The ISU is clear on this, what you do
is your choice, You can think and do as
you please.

Really? Show us where the ISU makes ANY claim regarding the metric
signature in any context.


From that you can easily transform to any CS
that is suitable to the particular need.
Regards
Ken S. Tucker

Regards
Ken S. Tucker

.

Relevant Pages

  • The Big Bang as a Cosmological Galilean Limit
    ... The Classification of Signatures and Signature-Changing Boundaries ... Classification of Signature Types and Interfaces ... and contravariant metrics be inverses to one another, ... Galilean spacetime as a Riemannian space) is the insistence on tying ...
    (sci.physics.research)
  • A Flat Spacetime That Changes Signature, Tachyon/Synchrons & Galilei Yang-Mills
    ... This is in reference to the "signature" problem of quantum gravity, ... Quantum Gravity treatise. ... degenerate metrics ... ... even Newton-Cartan spacetimes! ...
    (sci.physics.research)
  • Re: invariance of negative signature of the metric?
    ... negative signature on a spacelike surface (one or three ... IFF OTOH, "frame dragging" is confirmed ... metrics, propagated via the Guv,conveying ... The ISU is clear on this, ...
    (sci.physics.relativity)
  • Re: Test SPF3
    ... of natural units will include definitions and values for length, mass, time ... The signature choice you mention was a simplification, ... physics here, ... math of NonOrthogonal metrics as they are comfortable ...
    (sci.physics.relativity)
  • Re: where did the big bang start?
    ... The two metrics have to be treated independently, ... The number of independent degrees of freedom the variation delta can ... A and B are opposite signs -- this defines the signature of a 4- ... time is an absolute and simultaneity is absolute. ...
    (sci.physics)