Which of the following relations are satisfied by the basis ket vectors? ? \(\sum_n |a_n|^2 |\psi_n\rangle \langle \psi_n| = 1\) ? \(\sum_n |\psi_n\rangle \langle \psi_n| = 1\) ? \(\sum_n |\psi_m\rangle \langle \psi_n| = \delta_{mn}\) ? \(\sum_n |\psi_n\rangle \langle \psi_n| = 1\)
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Step 1: Recall that the basis ket vectors satisfy the orthonormality relation, which states that the inner product of two different basis ket vectors is 0, and the inner product of a basis ket vector with itself is 1. Show more…
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