Proof: Any unitary matrix U in C(nxn) can be expressed as e^A, where A is skew-symmetric in C(nxn).(adsbygoogle = window.adsbygoogle || []).push({});

Hint: U=Qdiag(m1...,mn)Q* and the absolute value of the eigenvalues of U is 1.

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# Proof-U=e^A ny unitary matrix U

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