Compactification of additional dimensions
26769
Why does string theory require 9 dimensions of space and one dimension of time?
43480
Visualizing the 4th dimension.
59422
Gravity in other than 3 spatial dimensions and stable orbits
59647
Vector spaces with fractional dimension
81351
Polish space in which the interior of each compact set is empty
22464
Which of the following subsets of   $\mathbb{R}^2$ are compact
72979
Why (in relatively non-technical terms) are Calabi-Yau manifolds favored for compactified dimensions in string theory?
79098
Why are extra dimensions necessary?
147793
A variation on the induced topology (subspace topology)
147197
Number of connected components of the complement of a compact
7794
Can a non-Euclidean space be descripted through an Euclidean space of higher dimension? So why use non-Euclidean?
126136
Fundamental question about dimensional analysis
156382
Why is Compactification restricted to Toroids, Calabi-Yau et al?
45485
Dimension of a subset
158814
Two definitions of locally compact space
7069
On the product of $\mathfrak c$-many separable spaces
47251
Non-compactness of $\mathbb{R}$ with the cocountable topology