Rational points on Atkin-Lehner quotients of geometrically hyperelliptic Shimura curves

Abstract

Guo and Yang give defining equations for all geometrically hyperelliptic Shimura curves $X_0(D,N)$. In this paper we compute the $\mathbb{Q}$-rational points on the Atkin-Lehner quotients of these curves using a variety of techniques. We also determine which rational points are CM for many of these curves.

23 pages. Comments welcome!