The Outer Product (10 minutes)

  • The outer product is a form of matrix operation that most instructors have likely said is not possible. So, tell students to get it out of their brains that the outer product is not doable!
  • Write down that the outer product is performed as follows.

So, this operation allows us to move from the bra-ket notation of the projection operator $P_{\alpha}$ and find our matrix representation.


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