Is the Poincaré theorem valid for our universe?
54395
Is Poincare recurrence relevant to our universe?
105973
how do we know the BBP formula for $\pi$ is valid?
68399
Do the laws of physics work everywhere in the universe?
24003
Is the universe fundamentally deterministic?
51742
What is the curvature of an empty universe?
68425
Electric charge neutrality of the Universe: evidences and theories
122357
Discreteness of Spacetime and Violation of Lorentz symmetry
140798
Is there absolute proof for gravitational waves?
92614
Does the Banach-Tarski paradox contradict our understanding of nature?
152997
Is there a kind of Noether's theorem for the Hamiltonian formalism?
45888
Minkowski metric -- why does it follow from the constancy of the speed of light?
134571
Why should a (physical) principle be applicable to different systems in different positions in space and time?
18144
Does a nonzero Poynting vector mean that there is propagation of energy?
82624
"Newtonian limit" property of special relativity
28035
How is Liouville's theorem compatible with the Second Law?
158214
General relativity: is curvature of spacetime really required or just a convenient representation?
60364
Universe Expansion as an absolute time reference