Normal ordering of operators: Commutator or no commutator
61304
Normal ordering of the commutator between annihilation and creation operator
20208
Why are anticommutators needed in quantization of Dirac fields?
2635
equality of two operators...
45130
Cyclic vector implies commuting linear operator is a polynomial
144019
A strictly positive operator is invertible
52791
Invertibility of an operator $T$ if $\|I-T\|<1$
73268
What is the sort order when using conditional operators?
131946
Order of an Element Under a Homomorphism
131906
"An operator is hermitian". Implications?
42531
Calculating commutators in quantum mechanics symbolically with the help of Mathematica
46212
What is the standard interpretation of order of operations for the basic arithmetic operations?
75796
Is every skew-adjoint matrix a commutator of two self-adjoint matrices
22297
Normal operator $\Rightarrow$ S invariant implies $S^\perp$ invariant
156498
Time ordering operator if commutator is $c$-number function
105686
Time-ordered operator in Srednicki
2396
Order-preserving injections of ordinals into $[0,1]$
144449
What is the physical meaning of commutators in quantum mechanics?