$A^k = I$ implies diagonalizable?
64747
If $A^m=I$ then A is Diagonalizable
28155
Two questions about diagonalization
151806
Prove that $A^k = 0 $ iff $A^2 = 0$
110325
proof of basic fact that torus actions are diagonalizable
80751
diagonalisability of matrix few properties
120933
A is similar to $A^k$, then each eigenvalue of $A$ is a root of unity
52791
Invertibility of an operator $T$ if $\|I-T\|<1$
78265
Diagonalizable matrix with parameters
53863
Making a non-diagonalizable matrix diagonalizable with an small perturbations
52260
Diagonalization and eigenvalues
38635
How to prove that the matrix $A^k$ approaches $0$ as $k$ approaches infinity
55018
Prove that $A^*A + I$ is invertible
112701
Prove that if matrix $A$ is nilpotent, then $I+A$ is invertible.
31898
Sufficient conditions for $x, Ax, A^2x, ...$ being linearly indepedent
98631
Postive-semidefiniteness of matrix with entries $1/(a_i+a_j)$
47313
What is $i^i$ and $(i^i)^i$
79739
Block diagonal matrix diagonalizable