Find the eigenvalues and eigen vectors of $A=(a_{ij})$ where $a_{ii}=0$ and $a_{ij}=1;i\neq j$.
2271
Determinant of a rank $1$ update of a scalar matrix, or characteristic polynomial of a rank $1$ matrix
100656
$2\times2$ matrix $A$ such that $A$ has one independent eigenvector while $A^{2}$ has two independent eigenvectors
60945
How to find the eigenvalues of tridiagonal Toeplitz matrix?
157246
Adjoint matrix eigenvalues and eigenvectors
53993
Can Eigenvalues[] and Eigenvectors[] be assumed to return the same ordering?
110086
Let $A$ be an $m \times n$ matrix. Show $A^TA$ and $AA^T$ have the same eigenvalues
16439
What are the eigenvalues of matrix that have all elements equal 1?
141628
How did the equation $|A- \lambda I| = 0$ came for finding Eigen values of a Matrix
149916
Minimum eigenvalue and singular value of a square matrix
149923
eigenvalues of A - aI in terms of eigenvalues of A
18282
Finding the minimal polynomial, the eigenvalues, and the characteristic polynomial of $T(A)=A+A^t$
27778
Eigenvalues of a real skew symmetric matrix
94424
Matrices and Eigenvalues of Norm
69547
Find the eigenvector associated with the smallest eigenvalue, not smallest in magnitude
97733
Can it be determined that the sum of the diagonal entries, of matrix A, equals the sum of eigenvalues of A
7457
Prove that $J^+AJ$ has positive eigenvalues
50010
Is this how eigenvalues of some matrix $A$ are related to the inverse of $A$?