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* concrete functors between categories of algebras
@ 2000-07-12 14:53 Claus Juergensen
  0 siblings, 0 replies; only message in thread
From: Claus Juergensen @ 2000-07-12 14:53 UTC (permalink / raw)
  To: categories

Let C be a category and F, G : C -> C be endo-functors.
I denote the category of all F-algebras by Alg_C F and
the canonical forgettable functor by U_F : Alg_C F -> C.

I'm interested in concrete functors 

	H : Alg_C F -> Alg_C G

where `concrete' indicates the property

	U_F = U_G . H


Does anybody know about such functors?

Thanks for any help/references!


Claus


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Dipl.-Math. Claus Juergensen             | Technische Universitaet Dresden      
e-mail: claus@orchid.inf.tu-dresden.de   | Fakultaet Informatik                 
phone: +49 (0)3 51 46 3 - 82 53          | Institut fuer Theoretische Informatik
Lehrstuhl Grundlagen der Programmierung  | D-01062 Dresden                      
http://orchid.inf.tu-dresden.de/gdp/     | Germany                              
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