New posts in Unitary Matrices

Prove that A is zero matrix

Prove that V is an identity operator

Abelian subgroup of the unit quaternions

How are $SU(n)$, $SL(n)$ and $\mathfrak{sl}(n,\mathbb{C})$ related?

Show that the eigenvalues of a unitary matrix have modulus $1$

Every matrix can be written as a sum of unitary matrices?

Do unitary matrices commute?

Find the determinant of $A + I$, where $A$ is a real matrix such that $AA^{\top}=I$ and $\det A<0$.

Does $A^n$ is unitary imply that $A$ is unitary?

What's the interpretation of a unitary matrix?