Adjective
multivalued (not comparable)
(mathematics) Of a function, associating one or more values of its range with each value of its domain.
The inverse sine function is multivalued unless it is restricted to a suitable range.
Definitions The convention will be used here that a capital first letter is used for the principal value of functions and the lower case version refers to the multivalued function. Source: Internet
For example, they do not satisfy : Both sides of the equation are multivalued by the definition of complex exponentiation given here, and the values on the left are a subset of those on the right. Source: Internet
The Bessel function of the first kind is an entire function if α is an integer, otherwise it is a multivalued function with singularity at zero. Source: Internet
However a multivalued function can be defined which satisfies most of the identities. Source: Internet
This is also a multivalued function, even when z is real. Source: Internet