Space-time infinite
4087
Did spacetime start with the Big bang?
113772
How to measure the curvature of the space-time?
65473
How can something finite become infinite?
27260
Infinite product with sign changes.
63748
What does it mean that the universe is "infinite"?
134697
How does classical GR concept of space-time emerge from string theory?
112910
Is the set of real numbers really uncountably infinite?
141447
Inverse Square Law and extra space dimensions
83175
Infinitesimal transformations for a relativistic particle
153935
A weaker Axiom of Infinity?
94055
Extending Rolle's Theorem to Infinity
137564
What exactly is meant by infinity?
94782
General relativity (gravitation) in time and one spatial dimension
56103
Is the universe finite or infinite?
137796
Local translations in curved spacetime
92343
Does cosmological time expand like space does?
51239
Do all the spacelike curve terminate at the spatial infinity $i_0$ in the Penrose Diagram of a Schwarzchild black hole?