Breaking of diffeomorphism invariance after fixing a background metric
99063
Einstein-Hilbert action as an effective field theory
39763
Proving left-invariance (and proof-verification for right-invariance) for metric constructed from left-invariant Haar measure
152446
Noether's Theorem and scale invariance
127798
Null geodesic given metric
91322
A diffeomorphism whose tangent map preserves dot products is an isometry.
11773
Levi-Civita connection between conformal metrics
123026
Rigid motion on $\mathbb{R}^2$ which fixes the origin is linear
90110
Hyperbolic metric geodesically complete
59833
Isometric embedding of Schwarzchild metric in $\mathbb{R}^4$
37091
The Dido problem with an arclength constraint
10209
How to show the spacetime interval is invariant in general?
93835
Why do those terms vanish if the metric is Hermitian?
113024
Can I use a higher rank tensor field as the metric field?
69199
How to find the continuous transformations which leave the action invariant?
88173
Finding bump function on a smooth manifold using partitions of unity.
37635
Diffeomorphism group of the unit circle
77867
Existence of a Riemannian metric inducing a given distance.