> so jo-në is not from *sa:- but from an original *y -> *a ya: nos
I. I need to complete myself with the semantism of 'jo-në':
In the case of yo-në, y-në, so-në we have a possesive construction that
used the demonstrative pronouns (in its first part) not the possesive
ones.
jo-në < PIE *a ya: nos 'that/this-one that-is ours'
related to a-jo > PAlb a ja: 'she' but also 'this one'
Similar
1. y-në is related to ay -> 'he' but also 'that one'
2. so-në is related to PAlb c^a: < PAlb *tsja: 'this' < PIE k'ja:j
(like in sonte 'this night')
II. The same possesive construction using demonstratives exists in
Romanian too:
Ex: 'aia a noastrã' word-by-word translation: 'that-one of ours'
'that-one that is ours'
Best Regards,
Marius Alexandru