Equation Icon  i1⋅⋅⋅ip ∑ m1⋅⋅⋅mp ℰ(p) = 𝒩i1m1𝒩i2m2 ⋅⋅⋅𝒩ipmpπ (p) . (2.19 ) m1,⋅⋅⋅,mp