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Re: bag intersection definition

From: Mikito Harakiri <mikharakiri_at_ywho.com>
Date: Tue, 9 Sep 2003 14:33:10 -0700
Message-ID: <QOr7b.29$oA5.245@news.oracle.com> 





"Jan Hidders" <jan.hidders_at_pandora.be> wrote in message
news:Xer7b.11203$N37.412786_at_phobos.telenet-ops.be...


> > {1,1,1} intersect {1,1} = {1,1,1,1,1,1}

>

> Yeah, but then you lose the equation that X intersect X = X. Anyway, this

is


> largely esthetics.




X union X = X



is not valid for bags either. Dual operations must have (or must have not)
dual identities.
Received on Tue Sep 09 2003 - 16:33:10 CDT












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