Does there exist a real square root for this diagonal matrix?
75690
Does the given matrix have a square root?
10828
If $A^2 = I$, then $A$ is diagonalizable, and is $I$ if $1$ is its only eigenvalue
82462
Square Root Algorithm
71833
Are idempotent matrices always diagonalizable?
149219
If $A$ is a non-square matrix with orthonormal columns, what is $A^+$?
125569
Prove that the eigenvalues of a real symmetric matrix are real
150714
Quick question: matrix with norm equal to spectral radius
135316
A basic question on diagonalizability of a matrix
146243
Does there exist a matrix $\mathbf{A}\in\mathbb{R}^{3\times3}$ such that $\mathbf{A}^{2}=-\mathbf{I}$?
95335
diagonalize quadratic form
70157
Is every matrix $A$ such that $A^k=I$ diagonalizable?
27778
Eigenvalues of a real skew symmetric matrix
53399
Proof of the uncountability of reals using the diagonal argument—problem?
68315
Why doesn't multiplying square roots of imaginary numbers follow $\sqrt{a} \times \sqrt{b} = \sqrt{ab}$?
53863
Making a non-diagonalizable matrix diagonalizable with an small perturbations
79739
Block diagonal matrix diagonalizable
49899
Determine the number of real roots