There are many wide-ranging doctoral graduation possibilities for mathematics in Göttingen. If you like to gain a PhD in mathematics after your bachelor/master studies, your first step is to contact a possible advisor. You can find information about the different areas of research and their agents in the category research. For your support, at least two other persons holding a doctoral degree come along, and you regularly report your advancements to the so-built "thesis committee" during your PhD studies.
The PhD studies normally take three years and take place within the framework of the study course "Mathematical Sciences". During the whole time of the PhD studies, the PhD students have to be enrolled at the university of Göttingen.
Informations on the Admission Regulations (in German only) can be found here.
The PhD program helps you to work on your doctoral dissertation and is composed as follows.
During the PhD studies, you have to gain achievements covering 30 credit points ("credits", abbreviated C), which you have to account for your doctoral examination, cf. Appendix\,6 of the Doctoral degree regulations.
You can find third-party funds support in particular in the DFG research training groups
and the German Academic Exchange Service (DAAD)
A successfully terminated doctoral graduation in mathematics leads to obtaining the doctoral degree "Dr.rer.nat." or by application to the doctoral degree "Doctor of Philosophy (Ph.D.)", Division of Natural Sciences. The doctoral study course "Mathematical Sciences" is part of the Georg-August University School of Science (GAUSS).