In general relativity, could our curved spacetime be embedded in a higher dimension flat spacetime (5D+1) of the compatible metric?
7794
Can a non-Euclidean space be descripted through an Euclidean space of higher dimension? So why use non-Euclidean?
77867
Existence of a Riemannian metric inducing a given distance.
113772
How to measure the curvature of the space-time?
121914
Unitary representations of the diffeomorphism group in curved spacetime
141320
Particle energy in general relativity?
38723
Can Poincare representations be embedded in non-standard Lorentz representations?
54020
Does a moving object curve space-time as its velocity increases?
148392
Has the concept of non-integer $(n+m)$-dimensional spacetime ever been investigated by theoretical physicists?
123415
Spacial curvature and expanding space
94782
General relativity (gravitation) in time and one spatial dimension
40548
Why would spacetime curvature cause gravity?
137834
Distance in relativistic circular motion in invariant spacetime
63402
Euler-Lagrange equation in curved spacetime: how to calculate $\partial \mathcal{L}/\partial(\nabla_\nu A_\mu)$?
4132
What is the closest general-relativistic equivalent of a "time slice"?
64158
What do we learn from gravity in three spacetime dimensions?
76894
Why is spacetime not Riemannian?
155345
Can we use curved spacetime to measure the one-way speed of light?