The origin of the Proto-Indo-European nominal accent-ablaut paradigms

In this paper, I will discuss the origin of the different nominal accent-ablaut paradigms that can be reconstructed for (late) Proto-Indo-European, and argue that new insights into several peculiarities of the Hittite nominal case system may have interesting consequences for this topic. In order to do so, it is important that we first have a good understanding of the nature and development of Proto-Indo-European ablaut and its correlation with accent.