From: Robin Houston <r.houston@cs.man.ac.uk>
To: categories@mta.ca
Subject: Re: Products in a compact closed category
Date: Thu, 27 Apr 2006 18:19:16 +0100 [thread overview]
Message-ID: <E1FZAQH-000151-B7@mailserv.mta.ca> (raw)
On Thu, Mar 23, 2006 at 12:17:05PM +0000, Robin Houston wrote:
> I recently proved that [finite] products (or coproducts) in a compact
> closed category are necessarily biproducts, and I'm wondering whether
> this is a known theorem.
Since a couple of you have been asking about this, I thought
I should post a quick followup message.
I had several private replies, almost all of them asking to see
the proof. None of my respondents knew of an existing proof.
A preliminary paper, describing the proof, in far more detail
than most of the people on this list would need, is available
from
http://www.arxiv.org/abs/math.CT/0604542
(If any of you have any comments on it, I'd be interested in hearing
them.)
Yours,
Robin
next reply other threads:[~2006-04-27 17:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-27 17:19 Robin Houston [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-03-23 12:17 Robin Houston
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