21 Feb
1992
21 Feb
'92
3:01 p.m.
My message related to Paul Taylor's question seems not to have been received since it has not yet appeared on the Bulletin Board: I recommend the following two papers in answer to this question of Paul Taylor: G.M. Kelly, Monomorphisms, epimorphisms, and pullbacks, J. Australian Math Soc Volume IX (1969) 124-142 P. Freyd and G.M. Kelly, Categories of continuous functors I, J. Pure Appl Algebra Volume 2 #3 (1972) 169-191 Regards, --Ross Street In any case, these references are also consistent with the comments of Mike Barr and Peter Freyd. --Ross =========================================================================