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Re: What is a vector field?
Posted:
Apr 25, 2013 11:02 AM


On 4/24/13 4/24/13 10:33 AM, Wade Jenkins wrote: > Tom Roberts wrote: >>>> Hmmmm. In physics, where we always have an ORIENTABLE manifold WITH >>>> METRIC, >>> >>> Certainly at an undergraduate level, but once you get into things like >>> gauge theories you need manifolds without a metric. >> >> Yes. I meant spacetime manifold. > > Finally you admit, relativity is an undergraduate level!
SR, certainly.
But GR and gauge theories not, and the issues discussed here are not (except possibly for a very advanced undergraduate).
Tom Roberts



