Re: Relational Lattice, what is it good for?
From: Mikito Harakiri <mikharakiri_nospaum_at_yahoo.com>
Date: 15 Feb 2006 12:24:13 -0800
Message-ID: <1140035053.383924.158590_at_z14g2000cwz.googlegroups.com>
Date: 15 Feb 2006 12:24:13 -0800
Message-ID: <1140035053.383924.158590_at_z14g2000cwz.googlegroups.com>
Mikito Harakiri wrote:
> Likewise, "Push-cross-through-project"
>
> ( pi_x A(x,y) ) X B(z) = pi_x_z ( A(x,y,z) join B(z) )
Typo:
( pi_x A(x,y) ) X B(z) = pi_x_z ( A(x,y) X B(z) )
> ("x" union A(x,y) ) join B(z) =
> = "xz" union (A(x,y,z) join B(z))
Typo:
("x" union A(x,y) ) join B(z) =
= "xz" union (A(x,y) join B(z))
Received on Wed Feb 15 2006 - 21:24:13 CET