Partial derivatives in Lagrangian formalism
7149
Calculus of variations -- how does it make sense to vary the position and the velocity independently?
65659
Partial derivative paradox
91359
Are these mixed partial derivatives equal?
112073
What does a Lagrangian of the form $L=m^2\dot x^4 +U(x)\dot x^2 -W(x)$ represent?
13644
Is the change in the Lagrangian always a total derivative for symmetry transformations of the action?
109187
The differences between Lagrange and Leibniz's derivative notations
70438
Generalize Clairaut-Schwarz theorem to arbitrary order of mixed partial derivatives
157191
Conjugate Variables, Noether's Theorem and QM
146853
Do we need inertial frames in Lagrangian mechanics?
138908
Most general Lagrangian in CFT in 0+1D
28935
Lagrangian of the Euler equations
23510
different possible definitions of the exterior derivative?
125026
When does order of partial derivatives matter?
106212
Multiple derivative notation
155492
Exercise on local and global symmetry for a given Lagrangian density
114562
Boundary conditions for calculus of variations in phase space and under canonical transformations
111611
When can we add a total time derivative of $f(q, \dot{q}, t)$ to a Lagrangian?