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Can I "bra" through a Modulus?

  1. Feb 20, 2016 #1
    If I have something like ||V>+|W>| That is the modulus of sum of two ket vectors, can I "bra" through the modulus like: <V|(||V>+|W>| )=|<V|V>+<V|W>|?

  2. jcsd
  3. Feb 20, 2016 #2


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    I have never heard of the modulus of a vector without knowing anything about the basis being used - at least you need to know the coefficients corresponding to each basis vector.
    You cannot take an inner product between a vector and a scalar.
  4. Feb 20, 2016 #3
    When you put it as you did in your second line, it makes sense that my approach was wrong headed.

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