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Math Help - Unitary operator

  1. #1
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    Unitary operator

    Hey guys.

    http://img397.imageshack.us/img397/7987/scan0001q.jpg

    I have this operator and I need to check if it's Unitary.
    I checked the "length of vector preservation test" as you can see in the pic and I came up with that, that it does not keep the length of a vector.
    Does that mean that it's not a Unitary operator?

    Thanks.
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  2. #2
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    Quote Originally Posted by asi123 View Post
    Hey guys.

    http://img397.imageshack.us/img397/7987/scan0001q.jpg

    I have this operator and I need to check if it's Unitary.
    I checked the "length of vector preservation test" as you can see in the pic and I came up with that, that it does not keep the length of a vector.
    Does that mean that it's not a Unitary operator?

    Thanks.
    Check the definition of "norm" for complex vectors... And try again!
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