4 Elementary FunctionsLogarithm, Exponential, Powers4.13 Lambert W-Function
Figure 4.13.2 (See in context.)
See accompanying text
Figure 4.13.2: The W⁡(z) function on the first 5 Riemann sheets. W⁡(z) maps the first Riemann sheet |ph⁡(z+e−1)|<π in the middle of the left-hand side to the region enclosed by the green curve on the right-hand side; it maps the Riemann sheet π<ph⁡z<3⁢π on the left-hand side to the region enclosed by the pink, green and orange curves on the right-hand side, etc.