Can we also Legendre transform the Lagrangian using $\frac{\partial L}{\partial q}$ instead of $\frac{\partial L}{\partial \dot q}$?
114672
Why do we use the Lagrangian and Hamiltonian instead of other related functions?
109187
The differences between Lagrange and Leibniz's derivative notations
72906
Is $\frac{\partial}{\partial x_1}=\frac{\partial}{\partial y_1}$ if $x_1=y_1$?
18054
Is there a proof from the first principle that the Lagrangian L = T - V?
142892
Lagrangian Mechanics - Commutativity Rule $\frac{d}{dt}\delta q=\delta \frac{dq}{dt} $
68523
Am I doing this right? Finding the time derivative of expectation value of momentum
17451
Expanding electromagnetic field Lagrangian in terms of gauge field
43343
How to derive addition of velocities without the Lorentz transformation?
114562
Boundary conditions for calculus of variations in phase space and under canonical transformations
99285
Why is the change in Hamiltonian for an active infinitesimal canonical transformation defined the way it is?
3603
Lagrangian and Hamiltonian EOM with dissipative force
26125
Does the canonical commutation relation fix the form of the momentum operator?
12422
Derivation of $E=pc$ for a massless particle?
51122
Lagrangian of Schrodinger field
983
Use partial or covariant derivatives when deriving equations of a field theory?
17414
Lagrangian of an effective potential
61142
Is there any physics that cannot be expressed in terms of Lagrange equations?