Teichmüller discs in Schottkyspace

Abstract: Take a Teichm\"uller disc whose corresponding flat surface has a Veech-Group that contains a parabolic element. We look at its image in Schottkyspace and show that we can always construct a Schottky covering such that this image is not a disc, and, in the case of translation surfaces, even a punctured disc. Firstly, we prove this for origamis (= square tiled closed translation surfaces) and, then, generalise the results to flat (resp. translation) surfaces. We also give an algorithm to find the corresponding subgroup of the fundamental group of the origami, and we give some examples. Moreover, we include an introduction to Teichm\"uller discs and Schottky space for the convenience of the reader.