Conservation Laws and time-reversal symmetry
13312
Is there something similar to Noether's theorem for discrete symmetries?
152809
A question concerning the Galilean invariance of Newton's laws
69188
Why is conservation of angular momentum considered a law?
72721
Do an action and its Euler-Lagrange equations have the same symmetries?
126388
Derivation of Lorentz Transformations
48930
Least-action classical electrodynamics without potentials
101786
Proving the Lorentz invariance of the Lorentz invariant phase space element
99467
How can I prove that the four-momentum of relativity is conserved like in classical mechanics?
34004
Why is time evolution unitary?
18583
What conservation law corresponds to Lorentz boosts?
130166
Equivalece of the geodesic equation and the continuity equation for the energy-momentum tensor
120529
Relations between diffeomorphism symmetry theories and invariant $SU(N), N \rightarrow \infty$ theories
116314
On-shell and off-shell transformations in Noether's theorem
25164
Velocity-Dependent Potential and Helmholtz Identities
106863
Special relativity and imaginary coefficient of the time coordinate
132943
Is there a symmetry associated to the conservation of information?
70880
Invariance of canonical Hamiltonian equation when adding the total time derivative of a function of $q_i$ and $t$ to the Lagrangian