Question: Consider a ket space spanned by the eigenkets {| ?? >} of a Hermitian operator A. There is no degeneracy. a. Prove that is the

Consider a ket space spanned by the eigenkets {| ?? >} of a Hermitian operator A. There is no degeneracy.

a. Prove that is the null operator,

b. what is the significance of?

c. Illustrate (a) and (b) using A set equal to Sz of a spin ? system.

Part a (4- ') a' Part b (A-a") , a" + a'

Part a (4- ') a' Part b (A-a") , a" + a' (a'- a")

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