We know that $A^{23} = 0$. What are the eigenvalues of $A$?
10001
Prove that the only eigenvalue of a nilpotent operator is 0?
66241
What can the eigenvalues of unitary matrices tell us?
88975
I need an intuitive explanation of eigenvalues and eigenvectors
10828
If $A^2 = I$, then $A$ is diagonalizable, and is $I$ if $1$ is its only eigenvalue
34539
How to intuitively understand eigenvalue and eigenvector?
18939
Eigenvalues of the transpose
127799
Eigenvalues of symmetric matrices are real without (!) complex numbers
76477
Eigenvalues with transpose question.
141628
How did the equation $|A- \lambda I| = 0$ came for finding Eigen values of a Matrix
41932
Prove that $\lambda = 0$ is an eigenvalue if and only if A is singular.
90064
What does it mean when Mathematica returns a zero "eigenvector"?
40274
If $|a| = 12, |b| = 22$ and $\langle a \rangle\cap \langle b\rangle \ne e$, prove that $a^6 = b^{11}$
61274
If $AA^T$ is the zero matrix, then $A$ is the zero matrix
6746
What is the Relationship between the Rank and the Number of Eigenvalues?
104424
If each eigenvalueof $A$ is either $+1$ or $-1$ $ \Rightarrow$ $A$ is similar to ${A^{ - 1}}$
49158
Multiplicity of eigenvalues
28584
Eigenvalues and eigenspaces of AB