Unitary Matrix

Unitary Matrix

In mathematics, a complex square matrix U is unitary if

where I is the identity matrix and U * is the conjugate transpose of U.

Read more about Unitary Matrix:  Properties, Equivalent Conditions

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    As all historians know, the past is a great darkness, and filled with echoes. Voices may reach us from it; but what they say to us is imbued with the obscurity of the matrix out of which they come; and try as we may, we cannot always decipher them precisely in the clearer light of our day.
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