8 Dec
2011
8 Dec
'11
4:30 a.m.
I thank all who responded for advising references I didn't know before. Now I no longer consider "my" convention for the directions of the comparisons (gamma,eps,eta) the only natural choice but this choice is also existent in the literature, in the `context category' of [Blute-Cockett-Seely, 1997] Best wishes, Kornel [For admin and other information see: http://www.mta.ca/~cat-dist/ ]