Category:Hypergeometric functions
{{Cat main|Hypergeometric function}}
Hypergeometric functions have a rich theory because of their many relations to other parts of mathematics. Many special functions can be represented in terms of a hypergeometric series; these are listed in the :Category:Special hypergeometric functions. And, because of certain power series identities relating two different hypergeometric functions, the ratio of those functions can sometimes be expressed in the form of a continued fraction.