Re: [tied] jer / full vowel question

On Uto, siječanj 30, 2007 12:27 am, Piotr Gasiorowski reče:

> On 2007-01-29 23:42, Miguel Carrasquer Vidal wrote:
>> On Mon, 29 Jan 2007 12:52:26 +0100, Piotr Gasiorowski
>
>>> It seems that the front vowels are original and the back ones in the
>>> instrumental are due to some kind of umlaut-like assimilation.
>>
>> I'm not so sure for the second person: cf. Skt. D túbhyam.
>
> Well, this is an independent innovation. My guess is that <túbHya(m)>
> got its /u/ from the nom. <t(u)vám>. Note Av. taibiia:, surely from
> *té-bHj-

Why would dative get analogical -u- after the nominative? That is
completely ad hoc I'm afraid in spite of it being a standard explanation.
And let's not forget Latvian dialectal mun.

Mate