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Mathematics
Differential Geometry
What is the Minkowski metric tensor's trace?
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[QUOTE="LCSphysicist, post: 6411873, member: 675151"] [B]TL;DR Summary:[/B] I would appreciate if you explain to me how to get the Minkowski metric tensor's trace. I am trying to follow the rule, that is, raising an index and the contract it. Be ##g_{\mu v}## the metric tensor in Minkowski space. Raising ##n^{v \mu}g_{\mu v}## and then, we need now to contract it. Now, in this step i smell a rat (i learned this pun today, hope this mean what i think this means haha) Can i simply say that ##\mu## is an index using Einstein notation? I am a little confused how to contract this and then reduced it to delta kronecker, which, in the end, will give us the trace equal four. [/QUOTE]
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Mathematics
Differential Geometry
What is the Minkowski metric tensor's trace?
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