On 4/21/2019 7:35 PM, [email protected] wrote:
On Sunday, April 21, 2019 at 8:07:28 PM UTC-6, Brent wrote: On 4/21/2019 6:31 PM, [email protected] <javascript:> wrote:*Here's something odd. At 9:45 in Susskind's Lecture 2 on GR, he says the metric tensor is a Kronecker delta function. But I could swear that the diagonal of -1,1,1,1 represents flat space in SR. AG *What's odd about that??? Flat space is just special case of curved space in which the curvature is zero. Brent*Sure, but he seems to be saying that the Kronecker delta is the metric tensor for curved space. Isn't that how you interpret his comment?*
No.?? After he goes thru the derivation with delta function in it, then he says it's different for a curve?? space.
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