Re: Relation subset operators
From: paul c <toledobythesea_at_oohay.ac>
Date: Fri, 05 Jun 2009 20:12:16 GMT
Message-ID: <A_eWl.30766$PH1.1049_at_edtnps82>
Date: Fri, 05 Jun 2009 20:12:16 GMT
Message-ID: <A_eWl.30766$PH1.1049_at_edtnps82>
cimode_at_hotmail.com wrote:
...
> For the moment, let's keep aggregating out of the equation. First, I
> want to make sure I understand correctly Question 8. The debunk link
> provided does not explain under what conditions a salesman, who'd be a
> part of a set of salesmen who have sold ALL purple cars, would NOT
> also be a salesman who sold AT LEAST one purple car. I would
> appreciate if you could give me one example clarifying the previous
> question ?
Maybe this answer is easier for some of us: there are no purple people, yet we know there are purple people eaters:
http://www.angelfire.com/pa/purplepaul/purpeat.html Received on Fri Jun 05 2009 - 22:12:16 CEST