# Thread: Prove: Hermitian matrix is also normal.

1. ## Prove: Hermitian matrix is also normal.

how to do the proof?
thank u

2. Originally Posted by ericmik
how to do the proof?
thank u
Well its just verifying the relation $AA^{H} = A^{H}A$

Let A be a Hermitian matrix, then $A = A^{H}$

What is $AA^{H}$? What is $A^{H}A$?

3. cool
i just realized the definition of normal operator

thank you