ˈiːtʃ sˈɛlfˈɛnɚdʒi mˈeɪtɹɪks fɚɹə ɡˈɪvən pəzˈɪʃən ɹᵻkwˈaɪɚz ˈɛntɹiz, sˌoʊ ðə tˈoʊɾəl nˈʌmbɚɹ ʌv sˈɛlfˈɛnɚdʒiz tə stˈoːɹ ɪz .
Each self-energy matrix for a given position requires  entries, so the total number of self-energies to store is .