On Wed, Jul 24, 2013 at 12:46:59PM +0200, Penguin Lover Alan McKinnon squawked: > @set1+@set2/@set3 reduces to: > > all the elements of set1 and set2 without the elements that are in set3 > (/ is difference). >
Speaking as a mathematician (and A. Gottlieb will agree with me), I would be rather annoyed that they chose (if this is not a misquote from the original proposed documentation) to use '/' for set difference instead of '\' as it is supposed to be. Humph. W -- Data aequatione quotcunque fluentes quantitae involvente fluxiones invenire et vice versa ~~~ I. Newton