Equation Icon  λE¯= − α¯U , λ¯U = − β ¯E, ( β) λW¯ = − 1 + -- E¯, 2 λE¯i = (1 + α) ¯Wi − V¯i, λ¯V = − ¯E , i i λW¯i = 0, λW¯ = 0. ij