Definition:Inverse Hyperbolic Sine/Complex/Definition 1

Definition
Let $\sinh: \C \to \C$ denote the hyperbolic sine as defined on the set of complex numbers.

The inverse hyperbolic sine is a multifunction defined as:


 * $\forall x \in \C: \sinh^{-1} \left({x}\right) = \left\{{y \in \C: x = \sinh \left({y}\right)}\right\}$

Also see

 * Equivalence of Definitions of Inverse Hyperbolic Sine