07-29-2016, 10:06 AM

Thomas, it would not change anything if one would replace infinite Euclidean space \(\mathbb{R}^3\) by a large enough torus \(T^3 \equiv (S^1)^3\). So the question if space is finite or infinite is completely irrelevant. (Except for relativist fanatics, who would object against \(T^3\) that it is incompatible with Lorentz symmetry, but who cares).