2 papers
cs.SC2008
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,…
cs.SC2008
Computing the fixing group of a rational function
Jaime Gutierrez, Rosario Rubio, David Sevilla
Let G=Aut_K (K(x)) be the Galois group of the transcendental degree one pure field extension K(x)/K. In this paper we describe polynomial time algorithms for computing the field Fi…