I Definition of Tensor Identity Simplification

Arman777
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Is there a simplifcation of ##g^{\alpha \delta}g_{\beta \gamma} ## or what is equal to ?
 
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it's just a coordinate dependent number no? assuming your indices are not abstract or anything
 
Okay I got no worries
 
Arman777 said:
Is there a simplifcation of ##g^{\alpha \delta}g_{\beta \gamma} ## or what is equal to ?

Not if all the indexes are different.

Also, what does this have to do with a tensor density?
 

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