What is meant by globally hyperbolic spacetime?
107637
Intuitive meaning of Globally Hyperbolic
120404
Showing that the geodesics in hyperbolic upper half-plane model are half circles
95681
If the universe is 3D, how is space-time like a "fabric"?
35415
Exact meaning of radial coordinate of the Schwarzschild metric
122390
Is every solution of Einstein field equations unique?
51239
Do all the spacelike curve terminate at the spatial infinity $i_0$ in the Penrose Diagram of a Schwarzchild black hole?
126008
What is the general procedure for constructing the Penrose diagram for an arbitrary $(1+1)d$ spacetime?
137834
Distance in relativistic circular motion in invariant spacetime
143235
Twin Paradox, calculating spacetime intervals from both perspectives
42343
Is spacetime all that exists?
9463
What is the proof that the universal constants ($G$, $\hbar$, $\ldots$) are really constant in time and space?
142376
What is global::?
71085
In Einstein's General Relativity, do the space-time dimensions curve?
62494
Can general relativity be completely described as a field in a flat space?
119747
What is the meaning of the "expansion of space"?
17218
Open problems in General Relativity
55968
Expression of the Hyperbolic Distance in the Upper Half Plane