IOW, without using vectors representing velocities greater than c, we can get different values for the metric tensor *field*. Brent says don't choose a pair to do the calculation, choose the second as conjugate of the first. How does this help? AG G On Tuesday, September 3, 2024 at 4:44:28 PM UTC-6 Alan Grayson wrote:
> The tangent space and the metric tensor field are used in GR. I fail to > see how your comments relate to the possibly ambiguous concept of the > latter. The metric tensor field seems ambiguously defined. AG > > On Tuesday, September 3, 2024 at 2:31:50 PM UTC-6 John Clark wrote: > >> On Tue, Sep 3, 2024 at 3:58 PM Alan Grayson <[email protected]> wrote: >> >> *> I don't think you understand the issue. Velocities greater than c in >>> the underlying spacetime manifold are allowed in the construction of the >>> tangent plane,* >> >> >> I don't think you understand that the things that mathematics allows and >> the things that the laws of physics allow are not necessarily the same >> thing. Mathematics allows for the existence of Newtonian physics, and >> Newton allows objects to travel much faster than the speed of light, but >> Einstein taught us that the laws of physics forbid it. >> >> Nearly all new theories in physics are mathematically consistent, but >> nearly all new theories in physics are also eventually proven to be wrong. >> >> John K Clark See what's on my new list at Extropolis >> <https://groups.google.com/g/extropolis> >> wpb >> >> >> > -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/e0d88832-3d06-4dca-ac74-55035b96b7bdn%40googlegroups.com.
