Sturm-Liouville Questions (2)
92044
Sturm-Liouville Questions
15035
An operator on the other side of the Schrödinger equation
11358
Eigenvalues of the Lagrangian?
77742
Queries about rotational groups $\mathrm{SO}(3)$ and $\mathrm{SU}(2)$ in QM
156636
The Existence of the $^1D$ term and the non-existence of the $^3D$ term?
6035
Brachistochrone Problem for Inhomogeneous Potential
116427
$(c^{\mu}\partial_{\mu}-m)\phi(x)=0$ not Lorentz-invariant?
38839
Exponential of the differential operator
31762
Radial Schrodinger equation with inverse power law potential
55377
Non-zero eigenvalues of $AA^T$ and $A^TA$
44016
Proof that the One-Dimensional Simple Harmonic Oscillator is Non-Degenerate?
128361
The kernel and range of the powers of a self-adjoint operator
14166
Hilbert space of harmonic oscillator: Countable vs uncountable?
34147
$\|u\|\leq \|u+av\| \Longrightarrow \langle u,v\rangle=0$
77388
Differentiation operator and eigenvalues
62211
Partial Differential Equation $U_t - (U_x)^2 = 0$
28155
Two questions about diagonalization