Equation Icon  −1 ∑ 1-∑ V1(x )E αV1 (x) = E α + φi(x)αiE α + 2 φi(x )φj (x )αiαjE α + ⋅⋅⋅ [ i ] i,j ∑ = Exp φi(x)αi E α i α(h) = e E α. (9.68 )