Definition:Inverse Hyperbolic Sine/Complex/Definition 1

Definition
The inverse hyperbolic sine is a multifunction defined as:


 * $\forall z \in \C: \map {\sinh^{-1} } z := \set {w \in \C: z = \map \sinh w}$

where $\map \sinh w$ is the hyperbolic sine function.

Also see

 * Equivalence of Definitions of Complex Inverse Hyperbolic Sine