From: Peter Freyd <pjf@saul.cis.upenn.edu>
To: categories@mta.ca
Subject: Yikes
Date: Tue, 20 May 2003 11:34:00 -0400 (EDT) [thread overview]
Message-ID: <200305201534.h4KFY00t020091@saul.cis.upenn.edu> (raw)
Peter Johnstone has pointed out to me that there is, of course, a much
easier example of a category in which projections from products
needn't be epi: the good ol' category of sets.
As they say, the empty set really does exist.
reply other threads:[~2003-05-20 15:34 UTC|newest]
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