Definition:Inverse Hyperbolic Cosine/Complex

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

Also see

 * Equivalence of Definitions of Inverse Hyperbolic Cosine


 * Definition:Inverse Hyperbolic Sine
 * Definition:Inverse Hyperbolic Tangent
 * Definition:Inverse Hyperbolic Cotangent
 * Definition:Inverse Hyperbolic Secant
 * Definition:Inverse Hyperbolic Cosecant