Eigenvalues of an almost diagonal matrix
96811
How to find the eigenvalues of a block-diagonal matrix?
136643
Continuity of eigenvalues and spectral radius for a general matrix
134981
Eigenvalues of $L^\dagger L$ are positive
144097
eigenvalues and eigenvectors of $vv^T$
24454
The relationship between the eigenvalues of matrices $XY$ and $YX$
128453
If $A$ has two eigenvalues $\lambda _1, \lambda_2$ and $\dim (E_{\lambda_1})=n-1$, then $A$ is diagonalizable
56083
Find the eigenvalues of a projection operator
59235
Finding eigenvalues of a differential operator
97733
Can it be determined that the sum of the diagonal entries, of matrix A, equals the sum of eigenvalues of A
116539
Eigenvalues of matrix satisfying $A^2 = A$
47173
Half-integer eigenvalues of orbital angular momentum
154667
Singular values of the data matrix and eigenvalues of the covariance matrix
106986
Eigenvalues of $AB$ and $BA$
95717
Same eigenvalues, but not similar
22222
Properties of zero-diagonal symmetric matrices
78265
Diagonalizable matrix with parameters
127799
Eigenvalues of symmetric matrices are real without (!) complex numbers