Let $A$ be a complex $3 \times 3$ matrix with $A^3 = -I$.
11857
$A$ be a complex $3\times 3$ matrix such that $A^3=-I$
6398
Can the product of an $4\times 3$ matrix and a $3\times 4$ matrix be invertible?
129743
$A$ be a $2\times 2$ real matrix with trace $2$ and determinant $-3$
86841
Find a matrix $B$ such that $B^3 = A$
73687
Powers of $i$ in Complex Numbers.
144145
Symmetric $3\times 3$ Matrices - Base matrix
4917
Inverse of this $3\times 3$ matrix using the Cayley–Hamilton theorem
81770
Determinant of an $n\times n$ complex matrix as an $2n\times 2n$ real determinant
99384
What are the Complex (Non-Real) Eigenvectors of $3\times 3$ Rotation Matrices?
124734
If $A^3=O$ is the matrice $A^2-A+I$ invertible?
26501
Proof using complex numbers
80982
Solve $a^3+b^3+3ab=1$ with $(a,b)\in \Bbb{Z}^2$
32103
Show that for a $2\times 2$ matrix $A^2=0$
105727
Why is the complex number $z=a+bi$ equivalent to the matrix form $\left(\begin{smallmatrix}a &-b\\b&a\end{smallmatrix}\right)$
110054
An easy question on complex
85297
find a $3 \times 3$ matrix $A$ such that $A \neq I_3$ and $A^{197}=I_3$.
101371
show that $f^{(3)}(c) \ge 3$ for $c\in(-1,1)$