How is the total energy invariant under the addition of a total derivative?
102564
Energy-momentum tensor transformation
59165
Derivative of a linear transformation.
53610
What is the difference between $Q=\Delta U+W$ and $\Delta U=Q+W$?
39877
Bond energy and tempetature
41407
How to derive or justify the expressions of momentum operator and energy operator?
88854
Simple way to understand what derivative is
49073
how to obtain solution for $u_t+u=u_{xx}$
17121
Kinetic energy with respect to different reference frames
57239
Why is energy in a wave proportional to amplitude squared?
15170
Legendre symbol, second supplementary law
155492
Exercise on local and global symmetry for a given Lagrangian density
64247
Noether Theorem and Energy conservation in classical mechanics
1048
Discreteness of set of energy eigenvalues
13020
Proof for the funky trace derivative : $d (\operatorname{trace} (ABA'C))$?
70880
Invariance of canonical Hamiltonian equation when adding the total time derivative of a function of $q_i$ and $t$ to the Lagrangian
76423
Why is the total energy of an orbiting system negative?
153794
What is the meaning of $1/(D+a)$, where $D$ is the derivative operator?