Re: What is an automorphism of a database instance?
From: Bob Badour <bbadour_at_pei.sympatico.ca>
Date: Fri, 28 Dec 2007 17:35:28 -0400
Message-ID: <47756c23$0$19890$9a566e8b_at_news.aliant.net>
Date: Fri, 28 Dec 2007 17:35:28 -0400
Message-ID: <47756c23$0$19890$9a566e8b_at_news.aliant.net>
Tegiri Nenashi wrote:
> On Dec 27, 9:15 pm, Kira Yamato <kira..._at_earthlink.net> wrote:
[snip]
> If this line of thought resonates with you, please check up
> http://arxiv.org/ftp/cs/papers/0603/0603044.pdf
> There are 2 homomorhisms of relational algebra into boolean algebras
> there.
Does Preparation H work well for that?
(Sorry, just kidding, I couldn't resist.) Received on Fri Dec 28 2007 - 22:35:28 CET