Can we actually prove with 100% certainty that there are more than 3 dimensions plus time $(t,x,y,z)$?
15799
Experimental evidence of a fourth spatial dimension?
51480
How much of an $n$-dimensional manifold can we embed into $\mathbb{R}^n$?
1799
How many k-dimensional subspaces there are in n-dimensional vector space over $\mathbb F_p$?
40256
Why are these two descriptions of real n-dimensional projective space  the same?
86034
Is it true that for algebraic sets $V,W$ we have $I(V \times W ) =I(V) + I(W)$?
5250
Are $T\mathbb{S}^2$ and $\mathbb{S}^2 \times \mathbb{R}^2$ different?
88956
For any three vectors $x,y,z\in\mathbb{R}^d$, we have $ \|y-z\|\cdot\|x\|\leq\|x-y\|\cdot\|z\|+\|z-x\|\cdot\|y\|$
85540
Prove or Disprove the Existence of Solutions...
24653
Integral in $n-$dimensional euclidean space
149430
Why does the universe exhibit three large-scale spatial dimensions?
11629
Can a discrete variable take on multiple values, and thus truth values, simultaneously in the mathematical proof below or elsewhere?
93121
How to prove there exists a linear transformation?
83449
Proof with 3D vectors
48495
Is it possible to prove the independence of the parallel postulate without non-euclidean geometry?
124786
Prove that V contains a subspace of each dimension
19497
Analogue of spherical coordinates in $n$-dimensions
145466
Is this a valid mathematical proof?