Proving that test particles in GR, follow spacetime geodesics
35883
Why do objects follow geodesics in spacetime?
130830
Counting degrees of freedom for gravitational waves as a gauge field
126008
What is the general procedure for constructing the Penrose diagram for an arbitrary $(1+1)d$ spacetime?
76894
Why is spacetime not Riemannian?
95763
Elastic modulii of spacetime
155657
argument about fallacy of diff(M) being a gauge group for general relativity
109358
Prove the Curvature Tensor is a Tensor
54857
The wave equation in general relativity, special relativity, and Cartesian coordinates
34312
Mathematically-oriented Treatment of General Relativity
137796
Local translations in curved spacetime
125081
What is the reasoning that leads one to postulate this second form for the relativistic particle action?
93835
Why do those terms vanish if the metric is Hermitian?
27490
Group Theory in General Relativity
54020
Does a moving object curve space-time as its velocity increases?
137834
Distance in relativistic circular motion in invariant spacetime
90110
Hyperbolic metric geodesically complete
76819
How does "warp drive" not violate Special Relativity causality constraints?