grandes-ecoles 2019 Q15

grandes-ecoles · France · centrale-maths2__psi Matrices Eigenvalue and Characteristic Polynomial Analysis
Let $A$ denote a matrix in $\mathcal{M}_n(\mathbb{C})$.
Show the converse of question 12: if 0 is the unique eigenvalue of $A$, then $A$ is nilpotent.
Let $A$ denote a matrix in $\mathcal{M}_n(\mathbb{C})$.

Show the converse of question 12: if 0 is the unique eigenvalue of $A$, then $A$ is nilpotent.