How could I prove that a unitary and upper triangular matrix A MUST be a diagonal matrix?

Printable View

- Dec 10th 2009, 05:12 PMdannyboycurtisunitary and upper triangular matrix => diagonal matrix
How could I prove that a unitary and upper triangular matrix A MUST be a diagonal matrix?

- Dec 10th 2009, 07:52 PMtonio