Re: dip Notions 2 Major Errors

From: Roger L. Cauvin (roger_at_deadspam.com)
Date: 09/25/04 

Date: Sat, 25 Sep 2004 13:46:53 -0500

"Mark Nicholls" <nicholls.mark@mtvne.com> wrote in message
news:2ri93fF19r7cjU1@uni-berlin.de...
>
> "Roger L. Cauvin" <roger@deadspam.com> wrote in message
> news:2rgu92F1a8qsmU1@uni-berlin.de...
>
> > My definition of "inversion" is exactly the same as Mark's.
> > Sayeth Mark:
> >
> > > I am not going to define what inversion means again.
> > >
> > > inverse(inverse(x)) ----> x
> > >
> > > sorry, I couldn't resist.
>
> define which set x is a member of.
>
> is it sentences or classes or packages.
>
> if there is an inversion under an operation, then apply
> twice and show it maps to the identity mapping.

I have repeatedly and explicitly stated many times which kind of entity
necessarily inverts in when applying the DIP. Why did you just ask me
whether it is "sentences or classes or packages" when I have specified and
named a different type of entity? Since I have been so explicit, YOU should
be able to:

a. Name the type of entity I have claimed inverts when applying the DIP.
b. Identify the entity before application of the DIP and the entity that
occurs after application of the DIP (hint: they both contain the word
"dependency").
c. Apply the definition of "inverse" YOU originally gave to show that
inverse(inverse(x)) ---> x holds for these entities. 

-- 
Roger L. Cauvin
nospam_roger@cauvin.org (omit the "nospam_" part)
Cauvin, Inc.
http://www.cauvin-inc.com

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