3+1 foliations of a spacetime
139922
Is it known what the necessary and sufficient conditions are for the existence of a "3+1 split" (by means of a foliation) of a (Lorentzian) manifold?
147876
Find $F$-related vector fields on $M\times N$, where $F(x)=(x, f(x))$
18687
First and second homotopy groups of a connected Lie group
132311
T$\mathbb{S}^{n} \times \mathbb{R}$ is diffeomorphic to $\mathbb{S}^{n}\times \mathbb{R}^{n+1}$
92504
Criteria of a trivial G bundle of a 3-manifold
151855
Non-linearity and self-coupling of gravity
10209
How to show the spacetime interval is invariant in general?
76692
Prove that $T$ has an orbit of period 3
129481
About the term $-\nabla_{[u,v]}w$ in the definition of Riemann curvature tensor
91440
Existence of a vector field with one singularity on a surface
151735
$\mathbb{R}^3 \setminus A$ deformation retracts onto $S^1 \vee S^2$
56206
Symmetry of the $3\times 3$ Cauchy Stress Tensor
57740
Counting independent components of Riemann curvature tensor
123235
A smooth vector field on $S^2$ vanishing at a single point
152405
Decoupling of Holomorphic and Anti-holomorphic parts in 2D CFT
22024
How to prove that orthochronous Lorentz transformations $O^+(1,3)$ form a group?
59422
Gravity in other than 3 spatial dimensions and stable orbits