• Iron Lynx
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    English
    6
    edit-2
    5 months ago

    … Isn’t AT, where A is:

    [a b]
    [c d]
    

    just

    [a c]
    [b d]
    
    • Kogasa
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      fedilink
      English
      55 months ago

      Yes. A matrix is unitary if the conjugate transpose (conjugate as in “complex conjugate”) is equal to its inverse.