#### Unirational fields of transcendence degree one and functional decomposition

##### Jaime Gutierrez, Rosario Rubio, David Sevilla

In this paper we present an algorithm to compute all unirational fields of transcendence degree one containing a given finite set of multivariate rational functions. In particular, we provide an algorithm to decompose a multivariate rational function f of the form f=g(h), where g is a univariate rational function and h a multivariate one.

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