Re: Requirements for update languages?
From: Jan Hidders <hidders_at_REMOVE.THIS.uia.ua.ac.be>
Date: 14 Nov 2002 13:49:45 +0100
Message-ID: <3dd39be9$1_at_news.uia.ac.be>
Date: 14 Nov 2002 13:49:45 +0100
Message-ID: <3dd39be9$1_at_news.uia.ac.be>
Lauri Pietarinen wrote:
>> >
>> > B1 x B2 = { ( x, n+m ) | (x, n) in B1, (x, m) in B2 }
>>
>> Ahem, that should of course be n.m, i.e., n times m, and not n+m. :-(
>
>Yes, it did look a bit strange...
>
>But just to clarify things, n and m are cardinalities, right?
>
>B1 = {(0,2 )} and B2 = {(1,1),(2,1)}
>
>if applied to the original example?
>
>But these are sets? So what do they have to do
>with bags?
- Jan Hidders