A B are two-body and one-body operators respectively.(adsbygoogle = window.adsbygoogle || []).push({});

Is the following equation correct? If so, Would you give me the proof in real space?

[tex]\sum\limits_{ijklm}\langle ij|A|km \rangle \langle m |B |l\rangle= \sum\limits_{ijkl}\langle ij|A B |k l\rangle[/tex]

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# Is this Dirac Ket Bra correct?

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