Definition talk:Ultrafilter

This shouldn't be a redirect. An ultrafilter on an ordered set is a dual ideal. --Dfeuer (talk) 00:04, 10 February 2013 (UTC)


 * You will need to set up a transclusion page with as many applications of the term "ultrafilter" as there are. --prime mover (talk) 00:20, 10 February 2013 (UTC)