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From: Ross Street <ross.street@mq.edu.au>
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Subject: Re:  Derived cotriples
Date: Wed, 23 May 2012 07:37:44 +1000
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Cc: Michael Barr <barr@math.mcgill.ca>, "Prof. Peter Johnstone" <P.T.Johnstone@dpmms.cam.ac.uk>
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On 23/05/2012, at 2:34 AM, Prof. Peter Johnstone wrote:

> The dual construction was studied by Sabah Fakir in "Monade =
idempotente
> associee a une monade", C.R. Acad. Sci. Paris 270 (1970), A99-101.

Brian Day made good use of that construction to revisit the =
Applegate-Tierney tower.
That might be relevant to Mike Barr too.
See=20
Day, Brian. On adjoint-functor factorisation.=20
Category Seminar (Proc. Sem., Sydney, 1972/1973), pp. 1--19.=20
Lecture Notes in Math., Vol. 420, Springer, Berlin, 1974.

Ross=


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