Do anyone has an example of nxn hermitian matrix with complex entries which has repeated eigenvalues?

If can make the n as small as possible. Thank you

Sorry for the mistake I made before in my question.

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- Feb 28th 2011, 07:59 PMguinhermitian matrix over C
Do anyone has an example of nxn hermitian matrix with complex entries which has repeated eigenvalues?

If can make the n as small as possible. Thank you

Sorry for the mistake I made before in my question. - Feb 28th 2011, 08:33 PMtopsquark
- Feb 28th 2011, 11:25 PMFernandoRevilla
Although the question has been already solved by

**topsquark**, I'd like to add that is hermitian iff for all . So, all diagonal real matrices with for all are hermitian and have distinct eigenvalues.