Commutator between square position and square momentum
115100
Operator Ordering Ambiguities
66092
Simultaneous diagonalization of commuting linear transformations
89621
Square roots of quaternions
107319
$F=ma$ contest problem on angular momentum
58445
What does the Canonical Commutation Relation (CCR) tell me about the overlap between Position and Momentum bases?
35571
Euler Rotations in Ordinary Space
35801
Traceless matrices and commutators
64353
Does the set of matrix commutators form a subspace?
93550
How to find the matrix representation of an operator from its action on a basis?
108657
Cross product of the quantum mechanical operators $\textbf{p}$ and $\textbf{A}$
103624
What is the Physical Meaning of Commutation of Two Operators?
62693
Eigenspaces of angular momentum operator and its square (Casimir operator)
77245
Angular momentum squared and Hamiltonian?
45130
Cyclic vector implies commuting linear operator is a polynomial
137189
What's the deal with momentum in the infinite square well?
128276
Quantization of orbital angular momentum
144449
What is the physical meaning of commutators in quantum mechanics?