Q: Sets

Hi there,


I'm trying to model something with sets but there's something
that I don't know how to do. I've read the library manual but
I haven't found anything yet.

Given set S1, I want to create set S2 using a bijection which
reverses order. E.g. assuming that X1 < X2 < X3 I want to map
the set {X1,X2,X3} to { C - X3, C - X2, C - X1 }.

Is there a way to do this?

Thanks in advance.

Regards,


Marc van Dongen
-- 
M.R.C. van Dongen | CS Dept University College Cork    |        ()
 dongen@cs.ucc.ie | Cork Constraint Computation Centre |        /\
+353(0)21 4903578 | Western Road                       |   ASCII ribbon
                  | Cork, Ireland                      | against html mail