Computing the fixing group of a rational function
نویسندگان
چکیده
Let AutKK(x) be the Galois group of the transcendental degree one pure field extension K ⊆ K(x). In this paper we describe polynomial time algorithms for computing the field Fix(H) fixed by a subgroup H ⊆ AutKK(x) and for computing the fixing group Gf of a rational function f ∈ K(x).
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عنوان ژورنال:
- CoRR
دوره abs/0805.2331 شماره
صفحات -
تاریخ انتشار 2008