Multiplication operator has no eigenvalues
39466
Multiplication operator has no no eigenvalues
149759
Problem on multiplication formulae.
103665
Product of matrices of different order is not invertible
144151
An orthonormal set cannot be a basis in an infinite dimension vector space?
155177
How do you write a differential operator as a matrix?
81070
Why must the eigenvalue of the number operator be an integer?
102152
Eigensystem, Eigenvalue doesn't output nonreal eigenvalues
120374
operators as strings
142493
elementary row operation change the eigenvalue of a matrix
45626
How do I calculate the eigenvalues of the positive partial transpose of this two-qubit state?
100731
Positive operator has a positive spectrum?
58339
The diagonalizable matrices are not dense in the square real matrices
44843
What is the difference between $|0\rangle $ and $0$?
76547
Why are addition and multiplication commutative, but not exponentiation?
98391
example of a nonempty subset is closed under scalar multiplication but not a subspace
105267
Why does the symbol for the multiplication operation change shape?
92455
Orthonormalization of non-hermitian matrix eigenvectors