Re: bag intersection definition
From: Mikito Harakiri <mikharakiri_at_ywho.com>
Date: Tue, 9 Sep 2003 14:33:10 -0700
Message-ID: <QOr7b.29$oA5.245_at_news.oracle.com>
Date: Tue, 9 Sep 2003 14:33:10 -0700
Message-ID: <QOr7b.29$oA5.245_at_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 - 23:33:10 CEST