Eigenvalues of a nilpotent matrix can only be $0$
10001
Prove that the only eigenvalue of a nilpotent operator is 0?
45527
Do real matrices always have real eigenvalues?
52260
Diagonalization and eigenvalues
22222
Properties of zero-diagonal symmetric matrices
1973
Traces of all positive powers of a matrix are zero implies it is nilpotent
119452
Nilpotent matrices with same minimal polynomial and nullity
90064
What does it mean when Mathematica returns a zero "eigenvector"?
66241
What can the eigenvalues of unitary matrices tell us?
55377
Non-zero eigenvalues of $AA^T$ and $A^TA$
5058
Eigenvalues of the rank one matrix $uv^T$
144531
How to prove that a nilpotent operator has a basis representation that is strictly upper triangular?
125802
Why is EigenValues returning Root expressions?
105988
Find the uniform lower bound of the smallest eigenvalue of a certain matrix
1048
Discreteness of set of energy eigenvalues
37537
Show that $det(A)=0$ for a Matrix $A$ Such That for $X=[2,3,4]^{T}$, $AX=0$
153203
Let $4$ and $5$ be the only eigenvalues of $T$. Show $T^2-9T + 20I = 0$ , T is self adjoint.
4509
Proof that an involutory matrix has eigenvalues 1,-1