From: Richard Garner <richard.garner@mq.edu.au>
To: Michal Przybylek <michal.przybylek@gmail.com>
Cc: Categories list <categories@mta.ca>
Subject: Re: Isbell envelope
Date: Mon, 12 May 2014 22:33:57 +1000 [thread overview]
Message-ID: <E1WkAf7-0000vq-Ra@mlist.mta.ca> (raw)
Most gratifying! That is just what I was looking for -- thanks!
Richard
On Mon, May 12, 2014, at 10:16 PM, Michal Przybylek wrote:
Dear Richard,
What you call "Isbell envelope'', was called by John Isbell "couple
category". The construction is defined in the following paper:
J. R. Isbell, "Normal completions of categories"
Best,
Michal
On Mon, May 12, 2014 at 6:09 AM, Richard Garner
<[1]richard.garner@mq.edu.au> wrote:
Dear categorists,
One of the more folklorish constructions in category theory is that of
the Isbell envelope. The folklorishness, in this case, seems to be so
severe that I cannot find mention made of it in any published article
at
all (though there are several to the related notion of Isbell
conjugacy). I am writing, therefore, in the hope that this is only due
to my own poor knowledge of the literature, and that some other reader
of this list may be able to put me to rights.
Richard
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next reply other threads:[~2014-05-12 12:33 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-12 12:33 Richard Garner [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-05-12 4:09 Richard Garner
2014-05-12 15:19 ` Mike Stay
2014-05-12 16:30 ` Simon Willerton
2014-05-12 17:10 ` Vaughan Pratt
2014-05-13 6:14 ` Samuel Dean
2014-05-14 0:20 ` Richard Garner
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