Nifty! I think it should be called "deconstruction" rather than "decomposition," but it is a nifty procedure, especially for those of us who like to think up election methods examples and counter-examples in tournament form. Dave K. asked where one might encounter a condorcet matrix that wasn't formed from a ballot set. How about a round robin sports tournament? Forest
<<winmail.dat>>
---- election-methods mailing list - see http://electorama.com/em for list info