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2010/5/2 Elisabetta Gentile <email@example.com>:
> Hi Everyone!
> I have an unbalanced panel of floods by country by year, from 1980 to
> 2009. Â My problem is that the missing years are not missing: they're
> just years when there were no floods. Â How do I add the missing years
> by country, populated with zeroes? Â I've tried a few things, but all I
> get is error messages.
> I'd really appreciate the statalisters' input!
> Thanks in advance,
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To every Ï?-consistent recursive class Îº of formulae there correspond
recursive class signs r, such that neither v Gen r nor Neg(v Gen r)
belongs to Flg(Îº) (where v is the free variable of r).
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