Re: What is an automorphism of a database instance?
Date: Fri, 28 Dec 2007 17:35:28 -0400
Tegiri Nenashi wrote:
> If this line of thought resonates with you, please check up
> There are 2 homomorhisms of relational algebra into boolean algebras
Does Preparation H work well for that?
(Sorry, just kidding, I couldn't resist.) Received on Fri Dec 28 2007 - 22:35:28 CET