bag intersection definition
From: Mikito Harakiri <mikharakiri_at_ywho.com>
Date: Fri, 5 Sep 2003 17:40:58 -0700
Message-ID: <Raa6b.36$pP2.61_at_news.oracle.com>
The "standard" definition when
Date: Fri, 5 Sep 2003 17:40:58 -0700
Message-ID: <Raa6b.36$pP2.61_at_news.oracle.com>
The "standard" definition when
{1,1,1} intersect {1,1} = {1,1}
is just plain naive. Given that
intersection = projection * equality selection * cross product
(operator multiplication notation is right-associate)
the definition should be:
{1,1,1} intersect {1,1} = {1,1,1,1,1,1}
Received on Sat Sep 06 2003 - 02:40:58 CEST