Subject: categories: My posting

From: Michael Barr <[email-masked]>
Date: Mon, 6 Apr 1998 15:07:33 -0400 (EDT)

Oops!

I thank Peter J. for an extremely gentle explanation.  And yes, Peter F.,
I did once take note of a certain lack of elements in the empty set, but,
believe it or not that was not the real source of my error.  But that was
so unbelievably dumb that I will keep it secret. 

Michael