Seifert fibrations of lens spaces

Abstract

We classify the Seifert fibrations of any given lens space L(p, q). Starting from any pair of coprime non-zero integers $\alpha _1^0,\alpha _2^0$, we give an algorithmic construction of a Seifert fibration $L(p,q)\rightarrow S^2(\alpha |\alpha _1^0|,\alpha |\alpha _2^0|)$, where the natural number $\alpha$ is determined by the algorithm. This algorithm produces all possible Seifert fibrations, and the isomorphisms between the resulting Seifert fibrations are described completely. Also, we show that all Seifert fibrations are isomorphic to certain standard models.