Re: Thinking about MINUS
From: Aloha Kakuikanu <aloha.kakuikanu_at_yahoo.com>
Date: 8 Jan 2007 10:00:43 -0800
Message-ID: <1168279243.719677.219240_at_42g2000cwt.googlegroups.com>
Date: 8 Jan 2007 10:00:43 -0800
Message-ID: <1168279243.719677.219240_at_42g2000cwt.googlegroups.com>
DBMS_Plumber wrote:
> Marshall wrote:
> > Even if we consider a system consisting only of the natural numbers,
> > zero, successor and predecessor, we have to wrestle with the question
> > of what the predecessor of zero is.
>
> Zero is not an element of the domain of natural numbers.
It certainly is. Received on Mon Jan 08 2007 - 19:00:43 CET