categories: Re: charact. of absolute equalisers

[Ross Street <street@ics.mq.edu.au>]

Bob Pare's answer fully answers the immediate question. Please allow 
me to add mention of a little observation on absolute colimits (not 
just coequalizers) in the context of enriched categories which 
appears as:

Absolute colimits in enriched categories, Cahiers topologie et 
géométrie différentielle 24 (1983) 377- 379; MR85i:18001.

It is a good opportunity for me to push the notion of weighted (or 
indexed) limit; see Francis Borceux's books (p. 327 of Book II) and 
G. Max Kelly's book (almost the central notion!).  Absoluteness is 
nicely expressible in terms of the weight.

--Ross