User blog comment:Hyp cos/Analysis - BEAF, FGH and SGH (part 3)/@comment-5029411-20131029215838

C(e(0)) = psi(psi_I(e(I+1)))

C(e(n)) = psi(psi_I(e(I+n+1)))

C(e(w)) = psi(psi_I(e(I+w)))