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Home -> Community -> Usenet -> comp.databases.theory -> Re: Dee Dum
Vadim Tropashko wrote:
> for any A. Hence, the two inequalities rewritten as 4 identities
>
> 01 join A = A
> 01 union A = 0
--------------^^^ :-)
Received on Wed Aug 17 2005 - 12:07:59 CDT
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