Equation Icon  [ n ] ⌊ ⌋ ∑ ∨ ∑ V(x ) = V1 (x)V2 (x ) = Exp φi(x)αi Exp ⌈ χα(x)E α⌉ ∈ 𝒢 ∕𝒦 (𝒢 ). (9.58 ) i=1 α∈Δ+