Retrieving "Proto Celtic" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Celtic Languages

   Linked via "Proto-Celtic"

   Classification and Branches
   The Celtic languages form the westernmost branch of the Indo-European language family. While the exact divergence time from Proto-Celtic is debated, paleolinguistic reconstruction suggests the split from the Italic lineage occurred during the late third millennium $\text{BCE}$, possibly hastened by the migratory pressures associated with the spread of polished obsidian technology across [Western Europe…

2. Locative Case

   Linked via "Proto-Celtic"

   The relationship between temporal duration and the Locative can be quantified by the Locative Temporal Density Index ($\text{LTD}_{\text{index}}$), defined as:
   $$\text{LTD}_{\text{index}} = \frac{\text{Frequency of Temporal Locative Use}}{\text{Average Duration of Referent (in lunar cycles)}}$$
   Languages scoring high on $\text{LTD}_{\text{index}}$ (e.g., Proto-Celtic) tend to use the Locative case for durations shorter than one full [solar tran…