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aygx
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question
3
Stress-energy tensor components for a perfect fluid
Feb 14, 2022
question
2
Second covariant derivative product rule [duplicate]
Oct 6, 2021
question
2
Finding the maps inside of the Nambo-Goto action
Jul 4, 2022
question
2
Choosing diffeomorphisms for the pullback metric in the Weak Field approximation
Apr 24, 2022
question
2
Definition of stress-energy tensor for the EFEs and other arbitrary cases
Dec 3, 2021
question
2
Christoffel symbol metric connection
Nov 30, 2021
question
2
Different Lagrangian formulas for geodesics [duplicate]
Nov 23, 2021
question
2
Christoffel symbols calculation
Nov 23, 2021
answer
1
How do we make sense of $F^{\mu\nu}F_{\mu\nu}$? The book just assumes I understand it
May 28, 2022
answer
1
Covariant vs. contravariant definition of the Energy-Momentum tensor
Apr 26, 2022